13 Best Crypto Custody Software Development Companies (2026)

The companies below build custody wallets and integrate custody providers such as Fireblocks, BitGo or Anchorage into exchanges, banks and fintech apps. Digital asset custody involves far more than keeping cryptocurrency keys offline. Institutions also need transaction approvals, segregation of holdings, audit trails, and secure connections to trading and payment systems. Regulated safekeeping providers and technology firms address different parts of this process, while growing activity in stablecoins and tokenized assets is making that distinction more important.

1. Itexus

Itexus develops fintech software for businesses building digital asset products, including custodial and non-custodial cryptocurrency wallets. Its blockchain development work covers secure key management, multi-chain wallet functionality, exchange connections, and integration with existing financial platforms. In a published crypto trading project, Itexus integrated Fireblocks as the asset custody layer while building the surrounding trading application and internal accounting workflows.

That mix of wallet engineering and financial software integration is relevant to firms launching a customer-facing crypto service. Itexus supplies development and implementation rather than acting as the legal custodian of customer assets.

Key Facts

• Best for: Custom wallet and custody-connected fintech platforms
• Core services: Custody software development, crypto wallet development, custody provider integration
• Notable projects: Coinstar digital wallet ecosystem; trading-platform integration with Fireblocks
• Engagement model: Custom product development and ongoing support
• Headquarters: Dover, DE, USA
• Founded: 2013
• Team size: 150+ engineers

Contact Information

• Website: itexus.com
• Email: moc.suxeti@ofni
• LinkedIn: www.linkedin.com/company/itexus
• Facebook: www.facebook.com/itexus
• Twitter: x.com/ItexusSoft
• Instagram: www.instagram.com/itexus.soft
• Address: 8, The Green, STE road, Dover, DE 19901, United States

2. HashCash Consultants

HashCash Consultants is an enterprise blockchain firm that builds wallet infrastructure, exchanges and payment rails for institutional clients. Its wallet infrastructure product covers the full key lifecycle, from generation and storage to rotation, backup, recovery and retirement. It supports multi-signature approval workflows, works with MPC architectures that sign without exposing complete private keys, and integrates hardware security modules for protected cryptographic operations.

Around the keys, the platform adds role-based access, policy limits on transactions, centralized management of multiple wallets and entities, and audit trails. It connects to the company's tokenization, compliance and transfer-agent modules, and it targets banks, asset managers, custodians and broker-dealers. HashCash also offers white-label Web3 and exchange wallets.

Key Facts

• Best for: Institutions building custody around tokenized assets
• Core services: Wallet infrastructure, white-label wallets, exchange wallets, tokenization platforms
• Specialization: Multisig, MPC and HSM-based institutional key management
• Headquarters: Palo Alto, CA, USA
• Founded: 2015

Contact Information

• Website: hashcashconsultants.com
• Email: moc.stnatlusnochsachsah@tcatnoc
• Phone: (888) 893-0588
• Address: 2100 Geng Road, Palo Alto, CA 94303, USA
• LinkedIn: www.linkedin.com/company/hashcash-consultants

3. SoluLab

SoluLab develops cryptocurrency wallets and blockchain applications for organizations launching financial and Web3 products. Its wallet services cover custodial and non-custodial designs, MPC approaches, wallet APIs, and security-related functions around key handling and transactions.

SoluLab builds the software through which businesses provide custody-related functionality to customers. Its scope also includes financial application development, smart contracts, and blockchain integrations. That makes the firm relevant when wallets and asset management must operate within a branded financial app or larger enterprise platform.

Key Facts

• Best for: Custom wallet products and embedded custody functionality
• Core services: Crypto wallet development, MPC architecture, blockchain software
• Specialization: Web3 applications and wallet integrations
• Engagement model: Custom software and dedicated engineering teams
• Headquarters: Los Angeles, CA, USA
• Founded: 2015
• Team size: 51–200 employees

Contact Information

• Website: www.solulab.com
• Email: moc.balulos@selas
• Phone: +1 (424) 404 9371
• Address: 12200 W. Olympic Blvd. Ste. 140 Los Angeles, CA 90064
• LinkedIn: www.linkedin.com/company/solulab
• Instagram: www.instagram.com/solulabofficial
• Facebook: www.facebook.com/solulab.inc
• Twitter: x.com/solulab

4. LeewayHertz

LeewayHertz develops enterprise blockchain systems, decentralized applications, and custom software for complex technology environments. Its product work includes cryptocurrency wallets and blockchain networks, alongside applications that connect distributed ledger functionality with established business services.

For custody projects, LeewayHertz provides engineering capabilities for wallets, asset interfaces, transaction records, and supporting enterprise software. The company has worked on blockchain verification and financial-data applications as well. Its broader integration practice is relevant to custody initiatives that must operate alongside corporate systems instead of functioning as isolated crypto wallets.

Key Facts

• Best for: Enterprise blockchain projects with wallet integration
• Core services: Blockchain development, decentralized applications, software engineering
• Specialization: Business-system and blockchain integration
• Notable projects: Web3 wallet and blockchain verification projects
• Headquarters: Gurugram, India
• Founded: 2007

Contact Information

• Website: www.leewayhertz.com
• Email: moc.ztrehyaweel@selas
• Address: 5th Floor, Tower C, Unitech Cyber Park Sector 39, Gurugram Haryana 122001
• LinkedIn: www.linkedin.com/company/leewayhertz-technologies
• Facebook: www.facebook.com/LeewayHertz
• Twitter: x.com/LeewayHertz

5. A-listware

A-listware offers software engineering and dedicated development teams for financial services, including cryptocurrency projects. Its published service scope includes blockchain networks, security token issuance, DeFi platforms, crypto wallets, smart contracts, and application integration. The company also provides security, QA, and infrastructure support for software products.

These capabilities serve businesses developing the technology stack around asset safekeeping, such as customer wallets, administrative portals, approval processes, and blockchain connections. A-listware's model is based on delivering developers and product engineering rather than holding clients' tokens as a regulated custodian.

Key Facts

• Best for: Additional engineering capacity for crypto and fintech products
• Core services: Blockchain development, crypto wallets, custom software, QA
• Engagement model: Dedicated teams and IT outsourcing
• Industries: Finance, banking, investment and cryptocurrency
• Headquarters: London, UK

Contact Information

• Website: a-listware.com
• Email: moc.erawtsil-a@ofni
• Facebook: www.facebook.com/alistware
• LinkedIn: www.linkedin.com/company/a-listware
• Address: St. Leonards-On-Sea, TN37 7TA, UK
• Phone: +44 (0)142 439 01 40

6. PixelPlex

PixelPlex builds blockchain financial products, including cryptocurrency wallets and related digital asset infrastructure. Its wallet development services address self-custody, delegated custody, transaction ledgers, administration tools, and integrations with blockchain networks or external providers.

The company's work centers on applications and workflows through which businesses manage digital assets under a chosen operating model. PixelPlex also develops tokenization systems, decentralized finance software, and smart contracts. Its combination of wallet engineering and broader financial blockchain development suits products where custody functionality must be connected to investing, trading, or token issuance.

Key Facts

• Best for: Custom wallet and digital asset platform development
• Core services: Wallet applications, blockchain development, smart contracts, integrations
• Specialization: Custodial and self-custodial wallet architecture
• Related work: Tokenization and decentralized finance software
• Headquarters: New York, NY, USA
• Founded: 2007
• Team size: 51–200 employees

Contact Information

• Website: pixelplex.io
• Email: oi.xelplexip@ofni
• Phone: +1 646 490 0772
• Address: West 28th St. Suite 31 USA
• LinkedIn: www.linkedin.com/company/pixelplex-inc
• Facebook: www.facebook.com/pixelplex.inc
• Twitter: x.com/pixelplexinc

7. Antier

Antier develops blockchain wallet and custody infrastructure for businesses entering digital asset markets. Its wallet-as-a-service product covers MPC, multisignature designs, white-label deployment, and API or SDK integration. Its crypto banking offering also connects wallets with transaction processes and operational controls.

Businesses building a custody-enabled product need to decide who controls private keys, how transfers are approved, and how access is managed. Antier's engineering services cover these decisions alongside blockchain application development. Its offering is relevant to exchanges, fintech providers, and enterprises requiring digital asset features within their own interfaces.

Key Facts

• Best for: White-label wallet services and enterprise custody architecture
• Core services: Wallet-as-a-service, MPC and multisig wallets, blockchain development
• Specialization: Digital asset infrastructure and crypto banking systems
• Integration options: APIs and SDKs
• Headquarters: Mohali, India
• Team size: 501–1,000 employees

Contact Information

• Website: www.antier.com
• Email: moc.reitna@tcatnoc
• Phone: +91 89686 17335
• Address: C-208, Phase 8B Industrial Area, Mohali, Punjab INDIA, 160059
• LinkedIn: www.linkedin.com/company/antierofficial
• Instagram: www.instagram.com/antier_official
• Facebook: www.facebook.com/antierofficial
• Twitter: x.com/antier_official

8. Blockchain App Factory

Blockchain App Factory develops cryptocurrency wallets, blockchain applications, and digital asset platforms. Its wallet development services include custodial and non-custodial designs, transaction handling, and technology that enables users or platform operators to manage assets across supported networks.

Its wider Web3 work covers crypto exchanges, token development, and applications connecting wallets to trading and tokenized asset activity. For buyers seeking a branded custody-enabled product, these capabilities support both wallet functionality and related platform features. The focus is on developing and deploying software, not operating an institutional custodial account.

Key Facts

• Best for: Branded crypto wallets and exchange-related custody software
• Core services: Crypto wallet development, blockchain platforms, exchange software
• Specialization: Custom and white-label Web3 products
• Related capabilities: Smart contracts and token platforms
• Headquarters: Chennai, India
• Team size: 201–500 employees

Contact Information

• Website: www.blockchainappfactory.com
• Email: moc.yrotcafppaniahckcolb@ofni
• Phone: +91 63692 50989
• Address: 60 Robinson Rd, Singapore 68892
• LinkedIn: www.linkedin.com/company/blockchainappfactory
• Instagram: www.instagram.com/blockchainappfactory
• Facebook: www.facebook.com/BlockchainAppFactory
• Twitter: x.com/Blockchain_BAF

9. Innowise

Innowise develops enterprise blockchain and financial software, including wallets and custody-related systems. Its blockchain engineering services cover institutional wallet architecture, access permissions, multisignature controls, and connections to digital asset platforms.

The company also develops transaction processing, financial applications, and system integrations. This makes it a relevant engineering partner for banks and fintech businesses adding digital asset capabilities to established products.

Key Facts

• Best for: Custom custody integration within financial systems
• Core services: Blockchain engineering, wallet solutions, financial software development
• Specialization: Institutional wallets and third-party platform integration
• Related capabilities: System integration, cybersecurity, dedicated engineering teams
• Headquarters: Warsaw, Poland
• Founded: 2007
• Team size: 1,001–5,000 employees

Contact Information

• Website: innowise.com
• Email: moc.esiwonni@tcatnoc
• Phone: +48 (787) 027 706
• Address: Rondo Daszyńskiego 2B, The Warsaw HUB B
• LinkedIn: www.linkedin.com/company/innowise-group
• Twitter: x.com/innowisegroup

10. Intellectsoft

Intellectsoft develops enterprise software and financial applications, including blockchain-enabled systems and digital wallets. Its project portfolio includes cryptocurrency wallet applications, while its broader services cover mobile development, system integration, and technology modernization.

The company's role in custody-related projects centers on building applications through which people access, transfer, and manage digital assets. Financial organizations can also draw on its integration experience when adding wallet capabilities to established platforms. Intellectsoft is an engineering partner for custody-related products rather than a specialist institution that holds client assets.

Key Facts

• Best for: Enterprise applications incorporating crypto wallets
• Core services: Mobile and web development, blockchain applications, system integration
• Specialization: Enterprise software and fintech product engineering
• Notable projects: Cryptocurrency wallet applications
• Headquarters: New York, NY, USA
• Founded: 2007

Contact Information

• Website: www.intellectsoft.net
• Email: ten.tfostcelletni@ofni
• Phone: +1 (650) 233-6196
• Address: 500 Fashion Ave Fl 8A New York City NY 10018, USA
• LinkedIn: www.linkedin.com/company/intellectsoft
• Facebook: www.facebook.com/Intellectsoft
• Twitter: x.com/Intellectsoft

11. 4IRE Labs

4IRE develops financial software and blockchain products, including cryptocurrency wallets, decentralized applications, and systems for tokenized assets. Its wallet development offering covers custody-related infrastructure and multisignature treasury functionality for organizations handling digital assets.

The company combines software engineering with blockchain development and financial product design. This supports projects where custody functions are embedded in a larger financial application or tokenization platform. Its fintech-oriented engineering scope also extends to transaction processing, account management interfaces, and integrations that surround wallet-based services.

Key Facts

• Best for: Fintech software with embedded digital asset custody features
• Core services: Wallet development, blockchain engineering, fintech applications
• Specialization: Custody-related wallet architecture and tokenization
• Related capabilities: Smart contracts and decentralized finance software
• Founded: 2010
• Team size: 11–50 employees

Contact Information

• Website: 4irelabs.com
• Email: moc.sbaleri4@ph
• Phone: +351 966 223 759
• Address: Hovslagargatan 5, 111 48, Stockholm
• LinkedIn: www.linkedin.com/company/4ire
• Instagram: www.instagram.com/4irelabs
• Twitter: x.com/4irelabs

12. OSKI Solutions

OSKI Solutions designs, builds, and maintains custom software, including fintech applications. Its service mix covers web and mobile development, cloud and DevOps, system modernization, cybersecurity and compliance work, and software testing. It also supports dedicated development teams for organizations extending their engineering capacity.

Digital asset businesses often need secure internal platforms and customer-facing applications that work with custody APIs, payments, and reporting services. OSKI's engineering and integration offering is relevant to those supporting workflows, particularly when a financial platform needs to be modernized or scaled.

Key Facts

• Best for: Custom fintech applications and systems integration
• Core services: Software development, cloud and DevOps, cybersecurity, QA
• Specialization: Web applications, mobile development, system modernization
• Engagement model: End-to-end projects and dedicated teams
• Headquarters: Tallinn, Estonia
• Team size: 51–200 employees

Contact Information

• Website: oski.site
• Email: etis.ikso@tcatnoc
• LinkedIn: www.linkedin.com/company/oski-solutions

13. Peiko

Peiko designs and develops blockchain platforms, cryptocurrency wallets, and exchange systems. Its blockchain services expressly include wallets and custody platforms, covering custodial and non-custodial approaches, transaction workflows, asset management features, and multichain integrations.

Custody software often needs separate user interfaces for administrators and customers. Peiko develops the surrounding components, including exchanges, payment integrations, smart contracts, and administrative tools. Its engineering services are relevant to startups creating wallet products or incorporating digital asset management into an existing application.

Key Facts

• Best for: New crypto wallet and custody software products
• Core services: Blockchain platforms, custodial and non-custodial wallets, exchanges
• Specialization: Custom Web3 product development
• Related capabilities: Smart contracts, multichain integration, payment gateways
• Headquarters: London, UK
• Founded: 2016

Contact Information

• Website: peiko.space
• Email: ecaps.okiep@olleh
• Phone: +1 (650) 278-4458
• LinkedIn: www.linkedin.com/company/peiko
• Twitter: x.com/peiko_space

Comparison Table

Company	Best for	Headquarters	Founded	Team size
Itexus	Custom wallet and custody-connected fintech platforms	Dover, DE, USA	2013	150+ engineers
HashCash Consultants	Institutions building custody around tokenized assets	Palo Alto, CA, USA	2015	—
SoluLab	Custom wallet products and embedded custody functionality	Los Angeles, CA, USA	2015	51–200 employees
LeewayHertz	Enterprise blockchain projects with wallet integration	Gurugram, India	2007	—
A-listware	Additional engineering capacity for crypto and fintech products	London, UK	—	—
PixelPlex	Custom wallet and digital asset platform development	New York, NY, USA	2007	51–200 employees
Antier	White-label wallet services and enterprise custody architecture	Mohali, India	—	501–1,000 employees
Blockchain App Factory	Branded crypto wallets and exchange-related custody software	Chennai, India	—	201–500 employees
Innowise	Custom custody integration within financial systems	Warsaw, Poland	2007	1,001–5,000 employees
Intellectsoft	Enterprise applications incorporating crypto wallets	New York, NY, USA	2007	—
4IRE Labs	Fintech software with embedded digital asset custody features	—	2010	11–50 employees
OSKI Solutions	Custom fintech applications and systems integration	Tallinn, Estonia	—	51–200 employees
Peiko	New crypto wallet and custody software products	London, UK	2016	—

How to Choose a Crypto Custody Software Development Company

Custody software decides who can move client assets and how a mistake is prevented or recovered. Before comparing vendors, settle whether you will hold keys yourself or connect a regulated custodian, because that choice changes the skills you need. The checks below focus on key management, approvals and evidence a partner has handled real funds.

Key management approach. Ask whether the team builds on MPC, multisig, HSMs or a custody provider API, and why they recommend one for your case. They should explain key generation ceremonies, share distribution, backup and rotation. Be wary of vendors who describe a hot wallet with encrypted keys on a server as institutional custody.

Approval and policy engine. Institutional custody depends on transaction policies: quorum approvals, amount thresholds, address whitelists, time locks and role separation. Ask to see how policies are configured, who can change them, and whether a policy change itself needs approval. A demo of a blocked withdrawal is more convincing than a slide describing governance.

Provider integration track record. If you plan to use Fireblocks, BitGo, Anchorage or a similar custodian, ask for projects where the team connected it to an exchange, bank or wallet app. Check how they handled webhooks, transaction signing callbacks, vault structure and reconciliation. Prior work with the same provider reduces risk around edge cases like stuck or replaced transactions.

Security audits and testing. Ask whether previous custody systems went through independent penetration tests or code audits, and whether the vendor will share summaries. Look for threat modeling, secure SDLC practices and handling of insider risk. Teams that cannot describe how they test recovery procedures or key loss scenarios have probably not run custody in production.

Chain coverage and reconciliation. List the blockchains and tokens you need now and in the next year. Each chain adds node infrastructure, fee handling and address formats. Ask how balances are reconciled between on-chain data, the custody ledger and your accounting system, and how the system flags differences before clients notice them.

Regulatory fit. Custody rules differ by jurisdiction, for example MiCA in the EU or state trust and money transmission rules in the US. The vendor will not be your compliance team, but they should understand segregation of client assets, audit trails and reporting needs, and build the logs and controls your auditors will ask for.

Conclusion

Custody procurement increasingly involves a choice between an independent regulated safekeeping institution and technology used to operate wallets under an institution's own controls. The legal entity holding assets, the ownership of signing keys, and the division of transaction approvals all affect operational responsibility. Buyers should also examine segregation, recovery procedures, supported blockchains, incident response, and how assets move to exchanges or payment networks. Stablecoins and tokenized securities add further demands for reconciliation, settlement, and governance. The most useful custody architecture is one whose security model and regulatory structure match the way the business actually operates.

Frequently Asked Questions

What is the difference between a custodian and custody software?

A custodian is a regulated entity that holds assets on behalf of clients, while custody software is the technology used to manage keys and transactions. You can license a custodian's service, or run custody software under your own controls and licenses. The choice affects legal responsibility, insurance, and how much engineering you take on.

How much does it cost to build crypto custody software?

Integrating an existing custody provider into your platform is typically far cheaper than building your own wallet infrastructure. Self-built custody costs more because of key management design, multi-chain support, policy engines, security audits and ongoing node operations. Provider licensing fees, audit costs and the number of supported chains are usually the biggest drivers of total spend.

Is MPC better than multisig for custody?

Neither is better in every case. MPC splits a single key into shares and works across most chains with standard transaction formats, while multisig uses on-chain logic that is transparent but chain-specific. Many institutions choose MPC for broad asset coverage and multisig for chains where on-chain verifiability matters. Your vendor should justify the choice for your assets.

How long does a custody integration take?

Connecting a custody provider to an existing exchange or fintech app often takes a few months, including policy setup, testing and security review. Building self-hosted custody takes longer because of key ceremonies, audits and infrastructure work. Provider onboarding, due diligence and regulatory approvals frequently set the pace more than coding does.

What should we prepare before talking to a custody developer?

Define who will legally hold the assets, which chains and tokens you need, expected volumes, and your approval rules for withdrawals. Note any regulatory licenses you hold or plan to obtain and your preferred custody provider, if any. This lets a vendor propose the right architecture rather than a generic wallet build.