Self-hosted projects using OpenSSL

Kong Gateway is a high-performance, cloud-native API gateway for routing, securing, and observing API traffic, with an extensible plugin system and Kubernetes support.

Alternative to:

Amazon API Gateway+7

Valkey is an open-source, Redis-compatible key/value datastore optimized for caching, queues, and other real-time workloads, with clustering, replication, and extensibili...

Alternative to:

Redis Cloud+4

OpenVPN is a widely used open-source VPN daemon providing TLS/SSL-based secure tunneling, flexible client-server and site-to-site modes, and cross-platform support.

Alternative to:

OpenVPN CloudConnexa+18

Eclipse Mosquitto is a lightweight, open-source MQTT broker supporting MQTT 5.0 and 3.1.1, plus client libraries and CLI tools for pub/sub messaging.

Alternative to:

EMQX Cloud+11

Open-source VPN client for desktop and mobile that can automatically set up a private VPN server and connect using WireGuard, OpenVPN, IKEv2, and obfuscated modes.

Alternative to:

NordVPN+15

Janus WebRTC Server is a lightweight, general-purpose WebRTC gateway for building real-time audio/video applications via plugins and a JSON-based API.

Alternative to:

Ant Media Server Cloud+2

SimpleLogin is an open-source email alias service that lets you create aliases to protect your real inbox, forward mail, and reply or send from aliases using custom domai...

Alternative to:

SimpleLogin+3

Cross-platform terminal music player with library indexing and a built-in streaming server for Windows, macOS, Linux, and Raspberry Pi.

Alternative to:

JRiver Media Center+7

Standards-based validating recursive DNS resolver with DNSSEC validation, DNS-over-TLS/HTTPS support and configurable caching for privacy and performance.

Alternative to:

Cloudflare DNS+9

Open-source PBX and telephony toolkit for building communications applications; modular C-based engine with SIP, WebRTC, RTP, ARI/AMI APIs and hardware support.

Alternative to:

3CX+19

ZNC is an advanced IRC bouncer that stays connected to IRC networks, letting you reconnect from one or more clients and replay buffered messages you missed.

Alternative to:

IRCCloud+3

On-prem password manager enabling secure sharing and fine-grained access control over credentials.

Alternative to:

Bitwarden+9

GPL-licensed SIP server/proxy for carriers, ITSPs, and enterprises, enabling scalable signaling, routing, and application integration.

InspIRCd is a modular, lightweight Internet Relay Chat (IRC) server with a flexible module system, designed for stable and performant IRC network deployments.

Alternative to:

IRCCloud+3

High-performance, standards-compliant IMAP/POP3/LMTP server with flexible authentication, extensible plugin system (Lua, Sieve) and OpenSSL TLS support.

Alternative to:

Microsoft Exchange Online+15

High-performance Rust proxy supporting HTTP/SOCKS5 forwarding, transparent proxying, TLS MITM, ICAP integration, ACLs, auth, and observability features.

Alternative to:

Bright Data+10

OpenTrashmail is a standalone disposable email (“trashmail”) service with its own SMTP server, offering a web UI plus JSON API, RSS feeds, and webhooks for received mail.

Alternative to:

Mailinator+3

Open source PHP app to manage domains, SSL certificates, registrars, hosting, DNS, IPs, and related internet assets, with reporting and optional WHM/cPanel data warehousi...

Alternative to:

Domain-Monitor+3

ngIRCd is a free, portable and lightweight IRC server for small/private networks, supporting IPv6, TLS, server linking, and optional PAM authentication.

Alternative to:

IRCCloud+3

UnrealIRCd is an open-source, modular IRC server implementing IRCv3, TLS, anti-spam/flood protections, GeoIP and admin APIs for running public or private IRC networks.

A small, C-based Mail Transfer Agent for local submission and outbound relay with TLS/SMTP authentication, aimed at home and small office use.

Alternative to:

Postfix+11

Open-source, modular SIP server (proxy, presence, conference, B2BUA) with push gateway, ICE/STUN/TURN, MySQL/SQLite support; optimized for mobile and embedded systems.

Alternative to:

3CX+11

Integrated installer and platform for home infrastructure. Provides VPN relay for NAT traversal, preconfigured email, automatic HTTPS, reverse proxy, and a web management...

Alternative to:

Cloudron+19

Icecast is an open source streaming media server for hosting internet radio and live audio streams using common streaming protocols and formats.

Alternative to:

Live365+5

Simple NixOS Mailserver provides NixOS modules to deploy a full email server with SMTP/IMAP, spam filtering, DKIM/DMARC/SPF, and TLS automation.

Alternative to:

Microsoft Exchange Online+14

Open Source Sendmail provides a subset of Proofpoint's Sendmail Sentrion MTA for large-scale mail deployments; current release is 8.16.1 with a PGP-signed tarball and Ope...

Alternative to:

Postfix+12

The sftp-server subsystem in OpenSSH provides SFTP file-transfer services over SSH with support for internal-sftp, chroot jails, public-key and certificate authentication...

Alternative to:

Files.com+12

Open-source, minimal ActivityPub server in portable C — multiuser, Mastodon-API compatible, no database required, JavaScript-free web UI for small federated instances.

Alternative to:

Mastodon (mastodon.social)+6

Courier is an integrated mail server suite providing ESMTP (MTA), IMAP, POP3, webmail, and mailing lists with optional LDAP/MySQL/PostgreSQL-backed virtual accounts.

Alternative to:

Microsoft Exchange Online+14

Squid is a high-performance caching proxy that accelerates web delivery, reduces bandwidth usage, and provides extensive access controls for proxy and reverse-proxy setup...

Alternative to:

Cloudflare CDN+6