AGPL-3.0

69 self-hostable open-source tools licensed under AGPL-3.0 · across 48 categories

Strong network copyleft: if you offer a modified version of the software to users over a network, you must make the modified source available to those users. The dominant license for self-hostable SaaS replacements.

One-line plain-English summary above — not legal advice. Confirm with the project's LICENSE file before commercial use.

AI chat assistant (consumer UI)

Jan alive ★ 42.5k replaces ChatGPT

5min installer (desktop app) · Free; it's a local desktop app — no server to host. Cost is the workstation that runs the model.

APM / observability platform

OpenObserve alive ★ 18.8k replaces New Relic +1

15min single-binary or docker run · $15-40/mo VPS; storage backed by S3-compatible object storage keeps cost predictable.

Async video messaging

Cap alive ★ 18.9k replaces Loom

30min (Cap Web — Next.js app + Postgres + S3-compatible store) · $10 VPS for the web app + an S3 bucket for video storage.

Business intelligence / dashboards / data exploration

Metabase alive ★ 47.3k replaces Tableau

10min — single JAR or docker-compose · $10 VPS handles a small team; Postgres app DB is light. Heavier queries cost on the warehouse, not Metabase.

Cloud development environment

Coder alive ★ 13.2k replaces GitHub Codespaces

30min — Coder server + workspace template (Terraform-driven) · $15/mo VPS for the control plane; per-developer workspace VMs/containers are the variable cost (e.g. $20/mo per active user on a Hetzner CCX13).

Cloud file sync + sharing for teams

Seafile alive ★ 14.7k replaces Google Drive

20min docker-compose (Seafile + MariaDB + Memcached) · $5-10/mo VPS for the app; storage is whatever block volume you mount (or S3 with the CE plugin).

Community / voice chat

Matrix (Synapse) alive ★ 4.18k replaces Discord +1

30-60min (Synapse + Element web client + reverse proxy) · $10 VPS for a small homeserver.
Mattermost alive ★ 36.7k replaces Discord +2

15min docker-compose · $5 VPS for ~50 daily-active users.
Revolt alive ★ 2.43k replaces Discord

20min docker-compose · $10 VPS for a small server — Mongo + several Rust services.

Creator email marketing

Keila alive ★ 2.09k replaces ConvertKit (Kit) +1

20min docker-compose (Elixir + Postgres) · $5 VPS — Elixir is light.
Listmonk alive ★ 20.1k replaces ConvertKit (Kit) +3

15min docker-compose (Go binary + Postgres) · $5 VPS for the app; SMTP relay (Amazon SES, Postmark, Resend) is the variable cost — SES at ~$0.10/1000 sends.

CRM (sales pipeline)

Twenty alive ★ 45.8k replaces Salesforce

15min docker-compose · $10 VPS — Node.js + Postgres + Redis.

Customer support / helpdesk

Zammad alive ★ 5.61k replaces Zendesk

30min docker-compose · $10 VPS — Elasticsearch + Postgres + Rails.

Customer support helpdesk / shared inbox

FreeScout alive ★ 4.26k replaces Help Scout +1

20min docker-compose (PHP + MariaDB) · $5/mo VPS for a small support team.

Distributed tracing / observability

Grafana Tempo alive ★ 5.25k replaces Honeycomb

30min docker-compose (Tempo + Grafana + collector) · $15-50/mo VPS — S3-backed for trace storage keeps cost predictable.

Electronic signature / document signing

Documenso alive ★ 12.9k replaces DocuSign

15min docker-compose (Next.js app + Postgres) · $10 VPS for the Next.js app + Postgres; signing certificate cost is separate (a self-signed dev cert is fine to test, real workflows want a CA-issued cert).
DocuSeal alive ★ 16.5k replaces DocuSign

10min docker-compose (Ruby on Rails + Postgres) · $10 VPS; same trusted-timestamp / signing-cert situation as Documenso.
OpenSign alive ★ 6.35k replaces DocuSign

20min docker-compose (Next.js + ParseServer + MongoDB) · $10-15 VPS for the multi-container stack.

File sync + sharing

Nextcloud alive ★ 34.9k replaces Dropbox +1

20min docker-compose (or AIO image) · $5-10 VPS plus disk for whatever you store; Hetzner storage box pairs well.
Seafile alive ★ 532 replaces Dropbox

20min docker-compose · $5 VPS — efficient sync engine, low overhead.

In-app messenger + customer support

Erxes alive ★ 3.98k replaces Intercom

30min docker-compose · $10 VPS for the messenger + inbox plugins.

Kanban / project boards

Planka alive ★ 12.0k replaces Trello

10min docker-compose · $5 VPS comfortably handles a small team.

Link-in-bio landing page

LinkStack alive ★ 3.58k replaces Linktree

10min docker-compose (PHP + SQLite or MySQL) · $5 VPS handles thousands of clicks/day for a small creator.

Live streaming + chat

OvenMediaEngine alive ★ 3.14k replaces Twitch

30min docker-compose (OME + OvenPlayer) · $15/mo VPS for the engine; bandwidth is the cost center.

Log management + SIEM

Grafana Loki alive ★ 28.2k replaces Splunk

30min docker-compose (Loki + Promtail + Grafana) · $10-50/mo VPS — Loki is index-light by design; storage backed by S3 stays cheap.

Machine translation API

LibreTranslate alive ★ 14.4k replaces DeepL

10min docker run (model downloads on first start) · $10-30/mo VPS — CPU-only works for low traffic; GPU recommended above 100 req/min.

Microblogging social network

Misskey alive ★ 11.2k replaces Twitter / X

45min docker-compose (Node app + Postgres + Redis + Meilisearch) · $10/mo VPS for a small instance.
Pleroma unknown ★ — replaces Twitter / X

30min — single-binary Elixir release + Postgres · $5/mo VPS for a personal instance — Pleroma is famously light.

Music streaming

Funkwhale unknown ★ — replaces Spotify

30min docker-compose (Django app + Postgres + Redis + Celery) · $10 VPS for the app stack; storage separately.

Newsletter publishing + paid subscriptions

Writefreely alive ★ 5.15k replaces Substack

15min single-binary or docker-compose · $5 VPS for the app; ActivityPub-federated so no separate email cost line.

Notes / wiki / docs

AppFlowy alive ★ 70.4k replaces Notion

30min docker-compose (AppFlowy Cloud) · $10 VPS for a small team; AppFlowy Cloud stack is heavier (Postgres + Redis + MinIO + AI worker).

Object storage / blob store

Garage alive ★ 3.77k replaces AWS S3

20min docker-compose for a 3-node cluster · $15/mo for 3 small VPSes geographically spread; Garage is built for low-end, geo-distributed hardware.
MinIO dead · archived ★ 60.9k replaces AWS S3

5min docker run · $5 VPS for a few hundred GB; storage cost scales with the disk you attach (e.g. Hetzner $7/mo for 1TB).

Observability (metrics + logs + traces + APM)

Grafana stack (Mimir + Loki + Tempo) alive ★ 73.7k replaces Datadog +1

1-2h to wire up the LGTM stack via docker-compose; multi-day to do it production-grade · $20-40 VPS for a small setup; cost scales with retention (S3 / object store strongly recommended).
Uptrace alive ★ 4.20k replaces Datadog

30min docker-compose · $10-20 VPS for a small fleet; ClickHouse + Postgres backend.

On-call rotation / incident response / paging

Grafana OnCall dead · archived ★ 3.88k replaces PagerDuty

30min docker-compose (OnCall engine + Postgres + Redis + Celery worker) · $10-15 VPS; SMS/voice still costs at Twilio's per-leg rate ($0.0075-0.05/leg).

Online course platform

Open edX alive ★ 8.10k replaces Teachable

2h — Tutor (Docker installer for Open edX) on a 4GB+ VPS · $30-60/mo VPS — Open edX is the heaviest of the three.

Online surveys

Formbricks alive ★ 12.2k replaces SurveyMonkey +1

20min docker-compose (Next.js + Postgres) · $10/mo VPS.

Password manager / secrets vault

Bitwarden Server (CE) alive ★ 18.6k replaces 1Password +1

30min (their bitwarden.sh installer) · $10-15 VPS — the official server is heavier (.NET + several services).
Passbolt alive ★ 5.90k replaces 1Password +1

20min docker-compose · $5-10 VPS.
Vaultwarden alive ★ 60.2k replaces 1Password +1

10min docker-compose · $5 VPS for a family or small team — single Rust binary + SQLite/Postgres.

Personal finance / budget tracking

Firefly III alive ★ 23.3k replaces Mint

30min docker-compose (PHP + MariaDB + cron + data importer) · $5-10/mo VPS.
Maybe Finance dead · archived ★ 54.1k replaces Mint

30min docker-compose (Rails + Postgres + Redis + Sidekiq) · $10/mo VPS.

Personal notes / web clipper / archive

Joplin alive ★ 54.8k replaces Evernote

10min — desktop/mobile app + Joplin Server (or any WebDAV) for sync · $5 VPS for Joplin Server (or $0 with Nextcloud / Dropbox / S3 sync); the apps are free desktop/mobile.
Logseq alive ★ 42.9k replaces Evernote

5min installer (desktop) + Logseq Sync or self-hosted CouchDB · $0 with local-only or git-backed sync; ~$5 VPS if you self-host the CouchDB sync backend.
Trilium Notes dead · archived ★ 2.92k replaces Evernote

15min docker run + desktop client install · $5 VPS for the sync server; desktop apps are free.

Photo backup / library / face search

Immich alive ★ 100.5k replaces Google Photos

15min docker-compose · $5-10 VPS for the app; storage cost dominates — a 1TB block-storage volume runs $5-10/mo on Hetzner or DO.
PhotoPrism alive ★ 39.7k replaces Google Photos

20min docker-compose (PhotoPrism + MariaDB) · $5-10 VPS + storage; a TensorFlow model bundles in for tag/face inference (CPU is fine for personal use).

Product analytics

Countly alive ★ 5.86k replaces Mixpanel

30min (their installer or docker-compose) · $10 VPS — Mongo-backed, plan for 4GB RAM.

Product analytics / event tracking / funnels

Plausible Analytics alive ★ 24.8k replaces Amplitude +3

10min docker-compose (Elixir app + ClickHouse + Postgres) · $10 VPS; ClickHouse is the heaviest piece but tiny at startup volumes.
RudderStack alive ★ 4.41k replaces Amplitude

30min docker-compose (rudder-server + Postgres + transformer + control plane) · $15 VPS for the server; storage is wherever you route events (BigQuery / Snowflake / your own Postgres).

Professional video hosting + embed

MediaCMS alive ★ 4.90k replaces Vimeo +1

30min docker-compose (Django + Postgres + Redis + Celery transcoder) · $15/mo VPS; storage and outbound bandwidth scale with library.
PeerTube alive ★ 14.7k replaces Vimeo +1

1h docker-compose (PeerTube + Postgres + Redis + transcoder) · $15-50/mo VPS; bandwidth dominates with WebTorrent peer-assist cutting hot-video cost.

Project + task management

Plane alive ★ 49.1k replaces Asana +3

15min docker-compose · $5 VPS for a small team.
Vikunja alive ★ 4.23k replaces Asana +1

10min docker-compose · $5 VPS — Go binary + Postgres/MySQL/SQLite.

Read-it-later / web article archive

Karakeep alive ★ 25.1k replaces Pocket +1

20min docker-compose (Next.js app + Meilisearch + Chrome browser worker) · $10 VPS — the headless Chrome worker for full-page screenshots adds memory overhead.

RSS feed reader

FreshRSS alive ★ 15.0k replaces Feedly

15min docker-compose (PHP + MariaDB or SQLite) · $5 VPS for a personal install; SQLite mode runs on a Raspberry Pi.

Sales CRM / pipeline management

SuiteCRM alive ★ 5.43k replaces Pipedrive +1

30min docker-compose (PHP + MySQL/MariaDB + Elasticsearch) · $10/mo VPS; heavier than Espo.

Scheduling / booking links

Cal.com alive ★ 42.5k replaces Calendly

20min docker-compose · $5-10 VPS — Postgres + Next.js app.

Social media scheduling + analytics

Mastodon Scheduled Posts (built-in) alive ★ 49.9k replaces Buffer +1

0min if you already run Mastodon · Free — uses your existing Mastodon instance.
Postiz alive ★ 30.3k replaces Buffer

30min docker-compose (Next.js + Postgres + Redis + workers) · $10/mo VPS for the stack; OAuth credentials per platform are free but you register apps yourself.

Spreadsheet / lightweight database

NocoDB alive ★ 63.0k replaces Airtable

10min docker-compose · $5 VPS for a small team — Mysql/Postgres + the NocoDB image.
Teable alive ★ 21.2k replaces Airtable

15min docker-compose · $5 VPS for small teams.

Team wiki / documentation

Wiki.js alive ★ 28.3k replaces Confluence

20min docker-compose · $5 VPS for small/medium teams.

Threaded community / forum

Lemmy alive ★ 14.4k replaces Reddit

30min docker-compose (Rust backend + Postgres + UI + pict-rs for images) · $5-10/mo VPS for a small instance; storage scales with image uploads.

Time tracking

Kimai alive ★ 4.65k replaces Toggl Track

20min docker-compose (PHP/Symfony + MariaDB) · $5/mo VPS for a small team.
Solidtime alive ★ 8.56k replaces Toggl Track

20min docker-compose (Laravel + Postgres + Redis) · $5-10/mo VPS.

Transactional email API

Cuttlefish dead ★ 1.62k replaces SendGrid

30min docker-compose (Rails app + Postgres) · $10 VPS — Rails + Postgres + a sender process; you still want an upstream relay for deliverability.

Visual website builder + CMS

Webstudio alive ★ 8.56k replaces Webflow

30min docker-compose (or use the hosted free tier) · $10 VPS for builder + Postgres; deploy output is static.