11 Companies That Use Haskell in Production

1. Hasura

   1 234 31,543 9.9 TypeScript

   Blazing fast, instant realtime GraphQL APIs on all your data with fine grained access control, also trigger webhooks on database events.

   

   Hasura is an open-source GraphQL engine that gives you instant access to a GraphQL API for your data. In the GitHub repository of Hasura, Haskell is the most used language, followed by languages like TypeScript, JavaScript, Python, and Go.

2. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. semantic-source

   2 24 9,032 8.9 Haskell

   Discontinued Parsing, analyzing, and comparing source code across many languages

   

   GitHub used Haskell for implementing Semantic, a command-line tool for parsing, analyzing, and comparing source code.

4. haxl

   3 11 4,301 4.1 Haskell

   A Haskell library that simplifies access to remote data, such as databases or web-based services.

   

   Haxl, a framework for efficient and concise data fetching.

5. Bond

   4 3 2,632 7.0 C++

   Discontinued Bond was a cross-platform framework for working with schematized data. The open-source project ended on March 31, 2025. (by microsoft)

   

   Microsoft uses Haskell in Bond, a cross-platform framework for working with schematized data.

6. Glean

   5 22 1,204 9.8 Hack

   System for collecting, deriving and working with facts about source code.

   

   Glean, a system for collecting and working with facts about source code.

7. Puts Debuggerer

   6 3,514 204 4.2 Ruby

   Ruby library for improved puts debugging, automatically displaying bonus useful information such as source line number and source code.

   

   GitHub used Haskell for implementing Semantic, a command-line tool for parsing, analyzing, and comparing source code.

8. cardano-node

   7 513 3,125 9.8 Haskell

   The core component that is used to participate in a Cardano decentralised blockchain.

   

   IOHK used Haskell to implement the Cardano blockchain platform and its smart contract language – Plutus. They chose it because Haskell is a perfect fit for high-assurance code in fields like finance and blockchain.

9. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

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