Money · Independent · 23 Oct 2026

Open-Cap-Stack/opencap

Open-source cap table & equity management platform — free Carta alternative for startups

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OpenCap: open-source cap table platform. Free equity management and cap table software for startups.

In simple English

This tool helps startup founders manage shares, stockholder lists, and legal documents in one place. It serves as a free alternative to expensive commercial services for tracking company ownership. You can run it on your own server or computer without paying subscription fees. Setting it up requires some technical knowledge of Node.js and a cloud database service. Maintenance is your responsibility, including backups and server updates.

What it is

A Node.js backend application with an Express REST API for managing startup equity, stakeholder records, share classes, and SAFE notes. It integrates with a cloud database service called ZeroDB for document storage and search.

What it is good for

Startup founders and early-stage companies wanting to manage their capitalization tables and stakeholder records without paying monthly subscription fees to commercial services.

Stars22
LicenceApache-2.0
LatestNo tagged releasechecked 23 Oct 2026
Last code change2026-09-04
Written inJavaScript
Setup effort
3 / 5
Payoff
4 / 5
Good
  • Tracks share classes, SAFE notes, and stakeholder ledgers.
  • Fully open-source with no licence fees.
  • Includes automated compliance checks and tax calculations.
Watch for
  • Requires an external ZeroDB cloud account to store application data.
  • Setup involves configuring environment variables and API keys manually.
  • Requires ongoing technical maintenance and self-hosting effort.
Replaces

Carta

Works well with

Docker

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Install
git clone https://github.com/Open-Cap-Stack/opencap.git
cd opencap
npm install
cp .env.example .env
npm run dev

Independent: reviewed for Repo Radar outside the daily editions. Every independent repository

On Stack Radar: Commerce & Finance › Financial Planning & Fundraising › Cap Tables.

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