I was interested in the economics of the Haskell programming language. I thought I would start by understanding better Haskell consultancies. (Updated in January 2026.)
Haskell consultancies
I am aware of the following consultancies that draw attention to their use of Haskell (in alphabetical order). In addition, there are individual people who offer to consult. The Haskell.org wiki has a list of consultants but it is not up to date in some respects.
ByteAlly Software Solutions Pvt Ltd
ByteAlly Software Solutions Pvt Ltd was founded in Chennai, India.
Clockwork Consulting A/S
Clockwork Consulting A/S is incorporated in Denmark and includes Haskell within its expertise (as well as Scala, Scala.js, Java ad Python). As at January 2026, it has 11 employees (June 2024 – 11).
Flipstone Technology Partners, Inc.
Flipstone Technology Partners, Inc. is a small development studio. It links to 14 GitHub profiles on its web site (June 2024 – 15), including Scott Conley. Scott is a former director of the Haskell Foundation. Flipstone has sponsored the Haskell Foundation.
FP Complete Corporation
FP Complete Corporation, now trading as FP Block, has a location in Charlotte, NC, USA and was founded in 2012. Its LinkedIn page refers to 26 people who are associated members (June 2024 – 21). Michael Snoyman is its VP, Software Engineering. Michael is a former director of the Haskell Foundation.
MLabs Ltd
MLabs Ltd was incorporated in England and Wales in October 2018. During the year ended 31 October 2024, it employed an average of 7 people (2023 – 23; 2022 – 22; 2021 – 9). It is a Haskell and Rust consultancy. MLabs has sponsored the Haskell Foundation.
Obsidian Systems
Obsidian Systems was founded in New York, USA in 2014 by Ali Abrar and Ryan Trinkle. Ryan is a director of the Haskell Foundation and its current Treasurer. Obsidian Systems has sponsored the Haskell Foundation.
Platonic Systems Limited
Plantonic Systems Limited is a team of Haskell programming experts. Its LinkedIn page refers to 18 people (June 2024 – 20) who are associated members. Platonic Systems has sponsored the Haskell Foundation.
Serokell OÜ
Serokell OÜ is registered in Estonia. It lists about 36 people as members of its broader team.
Stack Builders Inc.
Stack Builders Inc. was founded in 2009 and is based in New York, USA. Functional and type-safe languages are its speciality.
Tweag
Tweag is the ‘open source program office’ of Modus Create, LLC. Modus Create was founded in 2011. Tweag has sponsored the Haskell Foundation.
Well-Typed LLP
Well-Typed LLP was incorporated in the UK in March 2008. During the year ended 31 March 2025, it employed an average of 6 people (2024 – 5; 2023 – 6) and 4 people are currently members of the LLP (one appointed on 1 November 2023), including Andres Löh. Andres is a director of the Haskell Foundation and its current Chair. Well-Typed has sponsored the Haskell Foundation.
Well-Typed has published some information about its financial performance, for its 2015/16, 2016/17, and 2018/19 to 2021/22 financial years. That is summarised and re-presented in the table below. Profit is profit before members’ remuneration and profit shares available for discretionary division among members. In respect of employee’s Ms C Gundry joined Well-Type as its Business Administrator in September 2018.
| 2015/16 £000 | 2016/17 £000 | 2018/19 £000 | 2019/20 £000 | 2020/21 £000 | 2021/22 £000 | |
|---|---|---|---|---|---|---|
| Turnover | 903 | 1,143 | 1,223 | 1,400 | ||
| Cost of sales | 426 | 603 | 508 | 686 | ||
| Gross profit | 477 | 540 | 715 | 713 | ||
| Administrative expenses | 198 | 231 | 402 | 413 | ||
| Profit | 136 | 152 | 279 | 309 | 313 | 300 |
| No. employees | 2 | 1 | 3 | 3 | 4 | 5 |
| Members | Coutts Gundry Löh | Coutts Gundry Löh | Coutts Gundry Löh | Coutts Gundry Löh | Coutts Gundry Löh | Coutts Gundry Löh |