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OpenSourceSoftware.ai

Open-source software stack for software dev shops

For development shops that build software for clients and want their code, conversations and client work on infrastructure they control.

12 tools · saves about $7,106/yr for a team of 10 · picks reviewed Oct 2026

  1. Projects & sprints

    Plane61.6K starsAGPL-3.0-only

    Replaces Jira · Standard (billed yearly) · $7.91/user/mo · 10 seats · checked Oct 2026

    Issues, cycles and modules without Jira's weight; OpenProject for formal client reporting.

    Also good: OpenProject, Worklenz

  2. Code hosting & CI

    Gitea58.7K starsMIT

    Replaces GitHub · Team · $4/user/mo · 10 seats · checked Oct 2026

    Lightweight Git hosting with pull requests and built-in Actions-compatible CI.

  3. Team chat

    Mattermost39.5K starsAGPL-3.0

    Replaces Slack · Pro (billed yearly) · $7.25/user/mo · 10 seats · checked Oct 2026

    Slack-like chat built for engineering teams, with integrations for Git and CI.

    Also good: Zulip

  4. Video calls

    Jitsi Meet30.2K starsApache-2.0

    Replaces Zoom · Workplace Pro (billed yearly) · $14.16/user/mo · 3 seats · checked Oct 2026

    Browser video meetings with no accounts needed for clients.

  5. Docs & wiki

    Docmost22.1K starsAGPL-3.0-only

    Replaces Confluence · Standard (billed yearly) · $5.42/user/mo · 10 seats · checked Oct 2026

    Real-time wiki with spaces per client project.

  6. Password manager

    Vaultwarden69.8K starsAGPL-3.0

    Replaces 1Password · Business (billed yearly) · $7.99/user/mo · 10 seats · checked Oct 2026

    Lightweight Bitwarden-compatible server; use the official Bitwarden apps.

  7. Deploys & hosting

    Coolify65.1K starsApache-2.0

    Replaces Render · Pro workspace (compute billed separately) · $25/mo · checked Oct 2026

    Push-to-deploy for client apps and databases on servers you control.

    Also good: Dokploy

  8. Error tracking

    Sentry45.7K starsFSL-1.1-Apache-2.0

    Replaces Sentry · Team (billed yearly) · $26/mo · checked Oct 2026

    Source-available. Full Sentry for every client project; needs a large server.

  9. AI coding agent

    OpenCode222.5K starsMIT

    Replaces Cursor · Pro · $20/user/mo · 10 seats · checked Oct 2026

    Terminal coding agent that works with any model, including local ones.

  10. Time tracking

    Kimai5.1K starsAGPL-3.0-only

    Replaces Harvest · Teams (billed yearly) · $9/user/mo · 10 seats · checked Oct 2026

    Billable hours per client and project, with exports for invoicing.

  11. Invoicing

    Invoice Ninja10.3K starsElastic-2.0

    Replaces QuickBooks · Online Simple Start · $38/mo · checked Oct 2026

    Source-available. Project-based and recurring invoices with a client portal.

  12. Sales CRM

    Twenty60K starsAGPL-3.0-only

    Replaces HubSpot · Sales Hub Starter (billed yearly) · $15/user/mo · 2 seats · checked Oct 2026

    Developer-friendly CRM with an API and webhooks for your own tooling.

    Also good: EspoCRM

How we calculate

For each paid tool you tick, we take its public list price for the plan shown and multiply it by the seats your team would need. Some tools are only used by part of a team, so a row may count a share of your team or a fixed number of seats; the row says how many. Prices that depend on sales or usage are shown but not counted.

From that we subtract an estimate for running the open-source stack yourself: $165/month plus $2 per person per month (Two 8 vCPU / 16 GB cloud servers, plus storage per person), and any extra running cost a row lists, such as a GPU. The time it takes to set up and maintain the tools is not included.