Warning: Email hosting is very difficult to get right. ISPs also tend to block them and your server has no reputation so your emails go to other people's spam boxes. Run at your own risk

Mail Servers

Mailcow https://mailcow.email/

Postal https://docs.postalserver.io/

Webmail Clients

Roundcube https://roundcube.net/

Media

Multimedia

Jellyfin https://jellyfin.org/

Large music libraries

Navidrome https://www.navidrome.org/

Gaming

Minecraft

Auth Servers

Drasl https://github.com/Unmojang/Drasl

Ely.By https://github.com/elyby

Index Generator

https://github.com/betacraftuk/asset-index-maker

Launchers

Fjord Launcher https://github.com/unmojang/FjordLauncher

MultiMC https://github.com/MultiMC/Launcher

Cracked

Fjord Launcher Unlocked https://github.com/hero-persson/FjordLauncherUnlocked

Game Server Management

Pterodactyl https://pterodactyl.io/

DRM

EPUB/Ebook

Readium LCP Server https://github.com/readium/readium-lcp-server

Networking

Network Access Control

PacketFence https://www.packetfence.com/

FreeRADIUS https://www.freeradius.org/

Infra specific

virtualization

https://proxmox.com/en/

Clustering

Nomad https://developer.hashicorp.com/nomad

Kubernetes https://kubernetes.io/

(proxmox can cluster as well)

OS useful for clusters

NixOS https://nixos.org/

SSO

KeyCloak https://www.keycloak.org/

Authentik https://goauthentik.io/

Authelia https://www.authelia.com/

ZITADEL https://zitadel.com/

Apereo CAS https://apereo.github.io/cas/current/index.html

Policy Management

OPA https://www.openpolicyagent.org/

LDAP/User Store

FreeIPA https://www.freeipa.org/

OpenLDAP https://www.openldap.org/

Reverse Proxies, Webservers

Traefik (Proxy only) https://doc.traefik.io/traefik/

Caddy (Proxy and Webserver) https://caddyserver.com/

Nginx (Proxy and Webserver) https://nginx.org/

PKI

EJBCA https://www.ejbca.org/

Boulder (Powers LetsEncrypt) https://github.com/letsencrypt/boulder

Secrets Management

Vault (open core with minor restrictions) https://www.hashicorp.com/en/products/vault

SOPS https://getsops.io/

ZTN/VPN/Remote

ZTN/"ZeroTier-Like"

NetBird https://netbird.io/

UI for selfhosted ZeroTier controllers https://github.com/dec0dOS/zero-ui

VPN

AmneziaWG (Bypasses firewalls) https://docs.amnezia.org/

DNS

BIND https://www.isc.org/bind/

DHCP

Kea https://www.isc.org/kea/

S3-like storage

RustFS (MinIO drop in replacement) ttps://rustfs.com/en/

Databases

MariaDB https://mariadb.org/

Apache Cassandra https://cassandra.apache.org/_/index.html

Apache Accumulo https://accumulo.apache.org/

monitoring and visualization

Zabbix https://www.zabbix.com/

InfluxDB https://www.influxdata.com/

Prometheus https://prometheus.io/

Grafana https://grafana.com/

Uptime Kuma https://uptimekuma.org/

alerting and notification

Ntfy https://ntfy.sh/

Gotify https://gotify.net/

SIEM and security

Wazuh https://wazuh.com/

Error reporting

Sentry https://sentry.io/welcome/

GUI Management

Docker Management https://www.portainer.io/

General Linux administration https://cockpit-project.org/

ICANN Stack

FRED https://fred.nic.cz/en/

Namingo https://namingo.org/

Nomulus (Powers the Google registries) https://github.com/google/nomulus

RIPE NCC

https://github.com/RIPE-NCC

Registries, Repositories and Package Manager Services

Docker Registries

Quay https://www.projectquay.io/#v3

Harbor https://goharbor.io/

Official Docker registry https://hub.docker.com/_/registry

NPM

NPM Proxy Registry (Archives everything you download through it) https://www.verdaccio.org/

Backups

Restic https://restic.net/

Libraries and components

UI

MUI X https://github.com/mui/mui-x

MUI Material https://github.com/mui/material-ui

Server

Go3270 https://github.com/racingmars/go3270

Open Source Hardware

Time and Time Sync

Time-Card (Hardware+Software) - Atomic clock synced to GNSS https://github.com/Time-Appliances-Project/Time-Card

Radio

LimeSDR

https://github.com/myriadrf/LimeSDR-Mini-v2

https://github.com/MyriadRF/LimeSuite

https://github.com/myriadrf/LMS7002M-docs

https://github.com/myriadrf/LimeSDR-USB_FX3

https://github.com/myriadrf/LimeSDR-USB_GW

https://github.com/myriadrf/LimeSDR-USB

Duplex MMDVM Hotspot HAT https://github.com/phl0/MMDVM_HS_Dual_Hat

Government Open Source

United States Government

CFPB

HMDA Submission https://github.com/cfpb/hmda-platform

General Services Administration

USWDS https://github.com/uswds/uswds

United Kingdom

GovUK Design System https://github.com/alphagov/govuk-design-system

GovUK Frontend https://github.com/alphagov/govuk-frontend

Other GovUK Digital Services https://github.com/alphagov

Various Commercial/Large Scale apps

Octocon

https://github.com/OctoconDev/app

https://github.com/OctoconDev/octocon

Simply Plural

https://github.com/ApparyllisOrg/SimplyPluralApi

PluralKit

https://github.com/PluralKit/PluralKit

Pronouns.Page

https://gitlab.com/PronounsPage/PronounsPage

Ely.By

See above.

Trans Resources

Pitch and Resonance Analyzer https://github.com/lmcnulty/gender-voice-visualization

9.2 KiB Raw Blame History

Curated OpenSource Tools

Live Sound and Lighting

Sound

Lighting

VFX

Tools

3D animation

Home Automation

Hubs

ESP

Asset/Stock/Logistics

Asset Management

Stock and Logistics

Replacements for Popular Services

GitHub replacements

Google Drive/OneDrive

Google Photos replacements

OnePassword, NordPass replacements

iTicket, Ticketek, TicketMaster replacements

Slack, Discord replacements

Zoom replacements

GPS - Any Cloud Provider

TeamSpeak

Any CV generator

BitTorrent

Trackers

Clients

NAS/Network Attached Storage

Data Recovery

Quality of Life

Cryptocurrency

Team Awareness Kit

TAK Servers

TAK Clients

Telecommunications

Radio Comms

4G/LTE/Cellular

Mobile

Security and Anti-Forensic

Operating Systems

Recovery

Flashing tools

SRE (Software Reverse Engineering)

Old School

IRC Server

Email