What LispWorks does

LispWorks Ltd. is a privately-held UK software company headquartered in Cambridge that develops and sells LispWorks, a commercial ANSI Common Lisp development environment. Founded around 2001 as the corporate successor to Harlequin's Common Lisp tooling (a heritage preserved in the name of its long-running 'lisp-hug' — Harlequin User Group — mailing list), the company targets commercial software developers, academic institutions, and individual programmers building applications where Common Lisp's advanced features — the Common Lisp Object System, macro system, dynamic runtime, and rapid prototyping cycle — confer a competitive advantage. Documented end-users span aerospace, defense, financial trading, chemical engineering, music technology, genomics, public safety, automotive, and telecom, with named customers including Raytheon, Ford, Telenor, Netfonds, Napcon, HMS (Harvard Medical School), Norphonic AS, and ScoreCloud.

The core product is a full ANSI Common Lisp compiler and IDE that produces native code targeting Windows, macOS, Linux (x86/x64 and ARM), FreeBSD, Solaris, and — via the Mobile Runtime add-on — Android and iOS. It bundles a portable cross-platform GUI toolkit (CAPI) with native look-and-feel on each OS, symmetric multiprocessing support, Unicode/internationalization, and a Foreign Language Interface for C and Win32 libraries. Higher-tier editions add Common SQL (ODBC, Oracle OCI, PostgreSQL, MySQL, SQLite), LispWorks ORB for CORBA-based distributed computing, and KnowledgeWorks for rule-based, object-oriented, logical, and functional programming with embedded Prolog. Critically, all commercial editions include royalty-free runtime deployment, enabling developers to retain 100% of end-application revenue.

Revenue is generated through a tiered, primarily one-time-license model plus recurring contracts: Personal Edition (free, freemium onboarding), Hobbyist, HobbyistDV (delivery-capable, non-commercial), Professional, and Enterprise editions, with per-platform and 32/64-bit variants licensed separately; recurring annual maintenance contracts that entitle customers to free major upgrades; and incident-bundle support packs (5/10/20 incidents, 1-year validity) sourced directly from LispWorks engineers. Academic site licenses and Personal Editions anchor the developer-pipeline and community-marketing channels. Distribution is direct via the company website, email, and telephone sales, supplemented by international distributors and the self-sustaining lisp-hug user community, with the firm operating as a 1-10-person privately-held limited company and no external funding disclosed.

Name

LispWorks

Legal name

LispWorks Ltd.

Website

http://www.lispworks.com

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

1–10 employees

Short description

LispWorks Ltd. is a privately-held UK software company that develops and sells LispWorks, a commercial cross-platform ANSI Common Lisp IDE, compiler, and runtime-delivery system, serving commercial software developers, academic institutions, and individual programmers building cross-platform desktop and mobile applications in Common Lisp.

Ownership category

akta.pro rank

Headquarters

HQ city

Cambridge

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Operations, Marketing or Sales

Revenue model

1. Software Licenses: LispWorks generates revenue primarily through sales of software licenses across multiple editions: Personal Edition (free), Hobbyist Edition (affordable for non-commercial use), HobbyistDV Edition (adds delivery capability for non-commercial use), Professional Edition (commercial development), and Enterprise Edition (full feature set with database/ORB/KnowledgeWorks). Each platform (Windows, macOS, Linux, etc.) requires a separate license. Both 32-bit and 64-bit versions are licensed separately.
2. Maintenance Contracts: Annual maintenance contracts available for Professional and Enterprise Editions provide free upgrades to new Product Releases (e.g., version 8.0 to 8.1). Maintenance must be current on the date of the relevant Product Release to qualify. Maintenance Contracts can be renewed annually before expiry.
3. Support Packs: Technical support contracts offering email-based support from LispWorks experts. Packs cover 5, 10, or 20 chargeable support incidents for a fixed one-year period. Can include expedited fixes outside normal patch schedules. Chargeable incidents include writing/compiling/testing patches, updating documentation, debugging customer code, and providing technical advice.
4. Academic Site Licenses: Special pricing for teaching and research institutions requiring multiple seats. Discounts available for qualifying academic organizations through volume licensing arrangements.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

LispWorks Ltd. develops and sells LispWorks, an integrated cross-platform development environment for ANSI Common Lisp consisting of an advanced native-code compiler, IDE (editors, browsers, debuggers), the CAPI portable GUI toolkit, database connectivity (Common SQL), CORBA distributed computing (LispWorks ORB), and the KnowledgeWorks expert system environment. The product ships in five editions (Personal free, Hobbyist, HobbyistDV, Professional, Enterprise) for Windows, macOS, Linux, FreeBSD, and Solaris, with add-on mobile runtime generation for Android and iOS applications delivered royalty-free.

Product overview

LispWorks offers a multi-edition Common Lisp development platform with IDE, compiler, and runtime delivery capabilities spanning desktop (Windows, Linux, macOS, FreeBSD, Solaris) and mobile (Android, iOS) platforms. The portfolio is structured as: LispWorks core product in five editions (Personal free, Hobbyist, HobbyistDV, Professional, Enterprise) ranging from educational use to commercial development; LispWorks for Mobile Runtime (Android and iOS) as a separate add-on for mobile app integration; and optional modules including Common SQL (database access), KnowledgeWorks (expert systems/Prolog), and LispWorks ORB (CORBA distributed computing) bundled in higher editions. CAPI provides cross-platform GUI development, while CLIM 2.0 supports legacy interfaces.

Differentiator

Problem solved

Functional benefit

Brands

• LispWorks: Main product - ANSI Common Lisp implementation with IDE for Windows, Linux, macOS, FreeBSD and Solaris.
• LispWorks Personal Edition
• LispWorks for Mobile Runtime
• LispWorks ORB
• KnowledgeWorks

Products and services

• LispWorks Integrated cross-platform ANSI Common Lisp development tool, comprising a native-code compiler and IDE with editors, browsers, debuggers, and graph tools. Ships in five editions (Personal free, Hobbyist non-commercial, HobbyistDV non-commercial with delivery, Professional commercial, Enterprise commercial full-feature) with per-platform licensing on Windows, macOS, x86/x64 Linux, ARM Linux, FreeBSD, and x86/x64 Solaris.
• LispWorks for Mobile Runtime Generates royalty-free Lisp runtime libraries for embedding in mobile applications. Combines the Android Runtime (ARMv7, ARM64, x86, x86_64, Android 2.3.4+) and iOS Runtime (ARM64, iOS 8.0+) sold as add-ons to desktop LispWorks.
• Common SQL Lisp/SQL interface providing CLOS abstraction over relational databases, with built-in ODBC support on all platforms and native Oracle OCI, PostgreSQL, MySQL, and SQLite interfaces for the Enterprise Edition.
• KnowledgeWorks Integrated development environment for building knowledge-based systems combining rule-based, object-oriented, logical, functional, and database programming. Includes an OPS-compatible forward chainer (Rete algorithm), a Prolog-compatible backward chainer (Warren Abstract Machine), and a SQL interface.
• LispWorks ORB Complete CORBA 2.0 distributed computing solution for Common Lisp, including an integrated IDL compiler, full Object Request Broker, and Lisp binding compliant with OMG specifications (POA, IIOP, DII, DSI). Enables integration with CORBA components written in other languages.
• CLIM 2.0 Common Lisp Interface Manager implementation supporting legacy GUI applications. Included in Professional and Enterprise Editions on Windows and X11/Motif platforms.

Quantifiable outcome

• Runtime executables as small as 3-4MB for 32-bit console applications (6.5-7.5MB for 64-bit)
• +2 more outcomes

Named customers14 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

Feature9 records

Scale indicators4 records

Recent moves4 records

Expansion highlights4 records

Emerging players

• Embeddable Common Lisp (ECL): Open-source Common Lisp designed for embedding in C/C++ applications; an emerging alternative in scripting and library-extension use cases that overlap LispWorks' FLI/integration story.
• Clozure Associates: Maintainers of Clozure CL, a high-quality open-source Common Lisp implementation focused originally on Apple platforms; competes with LispWorks on the open-source/free axis for the same developer base.
• CMUCL: Long-running open-source Common Lisp implementation originally developed at Carnegie Mellon University; competes with LispWorks for technical users prioritizing free, native-code compilers.
• Steel Bank Common Lisp (SBCL): Open-source high-performance Common Lisp compiler widely used by Lisp developers; an indirect competitor that constrains pricing on LispWorks' commercial editions.

Broad incumbents

• JetBrains: Major commercial IDE vendor covering many languages; overlaps with LispWorks' developer-tools category and competes for the same enterprise developer-tools budget.
• Wolfram Research: Proprietary technical-computing platform (Mathematica / Wolfram Language) with its own integrated environment; analogous business model to LispWorks as a niche, paid, integrated language+IDE vendor serving technical specialists.
• MathWorks: Proprietary MATLAB platform with language, IDE, and toolboxes; comparable to LispWorks as a domain-specialized, paid, integrated language+IDE vendor for engineering and scientific users.
• Embarcadero Technologies: Vendor of Delphi and other development tools serving a niche, loyal customer base with a paid, integrated IDE; structurally analogous as a long-running niche commercial IDE vendor.

Others

• ActiveState: Commercial distribution and tooling for multiple open-source languages (Perl, Python, Tcl); an adjacent player offering paid language-tooling services comparable to LispWorks' support and maintenance contracts.

Direct peers

• Franz Inc: Franz Inc sells Allegro Common Lisp, the only other major commercial ANSI Common Lisp development environment and the closest direct competitor to LispWorks across IDE, compiler, and runtime.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/5044154

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about LispWorks