Best open source software for crypto and web3

1

BTCPay Server

Bitcoin and other cryptocurrencies payment processor.

Finance & Budgeting

7.9k

Stands out for a permissive MIT license. BTCPay Server has 7,860 GitHub stars, uses the MIT license and had 878 commits in the last year.

2

Bitcart

Cryptocurrencies payment processor and development platform.

Finance & BudgetingDocker

997

Stands out for the most recent release (0.11.0.1, October 2026). Bitcart has 997 GitHub stars, uses the MIT license, ships a Docker image and had 168 commits in the last year.

3

SHKeeper

Cryptocurrency payment processor with the unique combination of gateway and merchant allowing you to accept payments in multiple cryptocurrencies without fees and intermediaries.

Finance & Budgeting

634

Stands out for the newest codebase (created May 2022). SHKeeper has 634 GitHub stars, uses the GPL-3.0 license and had 127 commits in the last year.

4

DePay

Accept Web3 Payments directly into your wallet peer-to-peer.

Finance & Budgeting

135

Stands out for its JavaScript codebase. DePay has 135 GitHub stars, uses the MIT license and had 21 commits in the last year.

1

Ghostfolio

Wealth management software to keep track of stocks, ETFs and cryptocurrencies.

Finance & BudgetingDocker

9.6k

Stands out for the most GitHub stars. Ghostfolio has 9,593 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 1,711 commits in the last year; it replaces YNAB and Mint.

2

OctoBot

Cryptocurrency trading bot.

Finance & BudgetingDocker

6.9k

AI-nativeOctoBot has 6,872 GitHub stars, uses the GPL-3.0 license, ships a Docker image and had 757 commits in the last year.

1

Discourse

Advanced forum / community solution based on Ruby and JS.

Social & ForumsDocker

48k

Discourse has 48,023 GitHub stars, uses the GPL-2.0 license, ships a Docker image and had 7,492 commits in the last year; it replaces Reddit.

2

Element

Fully-featured Matrix client for Web, iOS & Android.

Team Chat

14k

Element has 13,620 GitHub stars, uses the AGPL-3.0 license and had 3,192 commits in the last year; it replaces Slack and Discord.

3

Synapse

Server for Matrix, an open standard for decentralized persistent communication.

Team Chat

4.7k

Synapse has 4,738 GitHub stars, uses the AGPL-3.0 license and had 940 commits in the last year; it replaces Slack.

4

Lemmy

Link aggregator for the fediverse (alternative to Reddit).

Social & ForumsDocker

15k

Lemmy has 14,651 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 330 commits in the last year; it replaces Twitter / X and Reddit.

1

VaultwardenFeatured

Lightweight Bitwarden server API implementation written in Rust.

Password ManagersDocker

70k

Vaultwarden has 69,807 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 217 commits in the last year; it replaces Bitwarden and 1Password.

2

Passbolt

Collaborative password manager.

Password ManagersDocker

6.2k

Passbolt has 6,191 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 2,041 commits in the last year; it replaces Bitwarden and 1Password.

3

Keycloak

Open-source identity and access management with SSO, OIDC, SAML and user federation.

Identity & SSODocker

38k

Keycloak has 37,563 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 3,232 commits in the last year; it replaces Auth0 and Okta.

1

Uptime Kuma

Easy-to-use self-hosted uptime monitor with status pages and 90+ notification channels.

Monitoring & Status PagesDocker

93k

Uptime Kuma has 93,018 GitHub stars, uses the MIT license, ships a Docker image and had 1,361 commits in the last year; it replaces Datadog and Uptime Robot.

2

Grafana

Dashboards and visualization for metrics, logs and traces from Prometheus, Loki and dozens of other sources.

Monitoring & Status PagesDocker

78k

Grafana has 77,561 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 11,934 commits in the last year; it replaces Datadog and Grafana Cloud.

3

Prometheus

Metrics-based monitoring and alerting toolkit with a powerful query language, built for cloud-native systems.

Monitoring & Status PagesDocker

67k

Prometheus has 66,825 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 2,795 commits in the last year; it replaces Datadog and Grafana Cloud.