Klarluft B.V.
Klarluft is a Rotterdam software-engineering studio whose own product, GitWarren, provides local, pull-request-style review of AI-generated and other Git changes before they are committed or pushed. It also provides contract engineering and product work for systems where correctness matters, including energy trading, healthcare and banking.
At a Glance
- Individual professional developers
- Developers and teams using coding agents such as Claude Code and Codex
- Companies with sensitive or unfinished source code that should not be uploaded for pre-commit review
- Energy trading and grid-balancing organizations
- +2 more
AI Tools by Klarluft B.V.
(1)
GitWarren
Local Git Code Review App
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Latest News
GitWarren v0.1.9 released with update-restart fixes, clearer CLI commands, Linux installation without Homebrew and CI runtime updates.
GitWarren v0.1.8 released following the v0.1.7 release and CLI/distribution work.
GitWarren v0.1.7 released with the always-on local tray, fixed-port and launcher milestone.
GitWarren v0.1.6 released with macOS, Windows and Linux downloads.
Products & Services
Free, GPL-3.0 open-source desktop and command-line/browser-served app for local, pull-request-style review of committed, staged, unstaged and untracked Git changes before they become commits. It includes threaded inline discussion and an MCP server so local coding agents can participate.
Secure Ethereum blockchain payment technology powered by zero-knowledge proofs and rollups, listed in Wrzosek's Klarluft founder portfolio.
Building blocks for Tezos smart contracts, listed in Wrzosek's Klarluft founder portfolio and represented by the public tzklar repositories.
Market Position
GitWarren positions itself as a local, pre-commit complement to hosted pull-request tools: it reviews the dirty worktree before GitHub sees it, keeps code and discussion on the user's machines, and lets AI agents join through MCP. Product Hunt's alternatives listing places it near tools such as Diffsmith, Graphite and Cubic, but GitWarren differentiates on single-user/local operation, untracked-file review and agent participation rather than team-hosted workflow or CI-centric review.
Leadership
Founders
Michał Wrzosek
Founder of Klarluft and a software engineer based in Rotterdam. His CV describes senior engineering roles at Eneco (2025-present), Shell (2020-2025), Quin (2022-2023), Valassis Digital (2019-2020) and moebel.de (2018-2019), plus blockchain work for Bitbond and projects including zKlar and tzKlar. His GitHub profile describes him as an entrepreneur, web consultant and programmer focused on Node.js, React, Ruby, Python and machine learning.
Executive Team
Michał Wrzosek
Founder
Rotterdam-based entrepreneur and senior software engineer; previous roles include Eneco, Shell, Quin, Valassis Digital and moebel.de, with blockchain consulting and product work through Klarluft.
Founding Story
Michał Wrzosek established Klarluft in 2018 as his software-engineering venture. GitWarren grew from his experience coding professionally while running five to seven simultaneous AI sessions: he found that existing review workflows started too late, after code had been committed and pushed, and wanted a local GitHub-like place where he and his agents could discuss staged, unstaged and untracked work before a commit.
Business Model
Revenue Model
GitWarren is distributed as a free, open-source local application under GPL-3.0. Klarluft's studio also offers contract engineering, product work and second-opinion services, as described on its official site.
Pricing Tiers
Open-source GPL-3.0 desktop app and CLI/browser distribution; no account or hosted service is required.
Target Markets
- Individual professional developers
- Developers and teams using coding agents such as Claude Code and Codex
- Companies with sensitive or unfinished source code that should not be uploaded for pre-commit review
- Energy trading and grid-balancing organizations
- Healthcare and electronic-medical-records organizations
- Banking and blockchain-related engineering projects
- Reviewing AI-agent output before it is committed or pushed to a company repository.
- Developers coordinating comments across five to seven simultaneous AI sessions.
- Reviewing work in local Git worktrees, including untracked files that would not appear in a pull request.
- Running a review UI on a headless VPS, WSL environment or other machine without a desktop.
- Private pre-commit review for developers who cannot send unfinished code to a hosted service.
- Local discussion between humans and coding agents through MCP.
- Shell trading department
- Eneco trading department
- WellSync
- DZ Bank