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Free alternatives to OpenSpec

50 free Developer Tools apps to use instead, best rated first.

Top picks

  1. GitHub

    Launch

    Host and review code, manage projects, and build software with millions of developers.

    Free

  2. P

    Payload CMS

    Launch

    Payload CMS is a self-hosted, code-first content management system that gives developers full control over their data structure and admin UI. It combines a powerful API, flexible authentication, file uploads, and localization out of the box

    FreeSelf-hosted

  3. O

    OneDev

    Launch

    OneDev is a comprehensive Git server that integrates CI/CD, Kanban boards, and package management all in a single platform. It aims to provide a seamless and unparalleled experience for developers and teams working on software projects.

    FreeSelf-hosted

  4. S

    SuiteCRM

    Launch

    SuiteCRM is an open source Customer Relationship Management (CRM) software solution that provides a 360-degree view of your customers and business. It empowers businesses to streamline operations, enhance customer engagement, and increase s

    FreeSelf-hosted

  5. Replit

    Launch

    Code, create, and deploy anything from your browser. Includes Agent for full-stack AI coding.

    Free

  6. CodePen

    Launch

    The best place to build, test and discover front-end code. HTML, CSS, JS — live.

    Free

More Developer Tools apps

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7
D

Dokploy

Open-source alternative to Heroku, Vercel, and Netlify

Launch
8
D

drawDB

Online Database Schema Design & ER Diagram Tool

Launch
9
A

AdGuard Home

User-friendly ads & trackers blocking DNS server. (Source Code) GPL-3.0 Docker

Launch
10
C

Caddy

Powerful, enterprise-ready, open source web server with automatic HTTPS

Launch
11
E

Eclipse IDE

Create and refine code with an intuitive interface, track changes, debug

Launch
12
K

Kanboard

Simple visual task board. (Source Code) MIT PHP

Launch
13
T

Traefik

HTTP reverse proxy and load balancer that makes deploying microservices easy

Launch
14
W

Wiki.js

Modern, lightweight and powerful wiki app using Git and Markdown

Launch
15
J

Jenkins

Automate testing, deploy apps, monitor performance, and streamline workflow

Launch
16
P

Paperless-ngx

Scan, index, and archive all of your paper documents with an improved interface

Launch
17
P

PrivateBin

Minimalist pastebin/discussion board where the server has zero knowledge of

Launch
18
T

Teleport

Certificate authority and access plane for SSH, Kubernetes, web applications

Launch
19
M

MindsDB

AI layer for existing databases

Launch
20
G

Graylog

Easily monitor, analyze, troubleshoot log data

Launch
21
P

Postal

Complete and fully featured mail server for use by websites & web servers

Launch
22
N

Nginx Proxy Manager

Docker container for managing Nginx proxy hosts

Launch
23
R

revealjs

Framework for easily creating beautiful presentations using HTML

Launch
24
D

diaspora

Distributed social networking server. (Source Code) AGPL-3.0 Ruby

Launch
25
U

Umbrel

A beautiful personal server OS for self-hosting

Launch
26
T

Thingsboard

IoT Platform - Device management, data collection, processing and visualization

Launch
27
T

Tipi

Homeserver manager. One command setup

Launch
28
D

Dawarich

Visualize your location history, track your movements

Launch
29
N

Neko

Virtual browser that runs in docker and uses WebRTC

Launch
30
A

Angular DevTools

Angular DevTools extends Firefox DevTools adding Angular specific debugging and

Launch
31
S

Speed Test by OpenSpeedTest™

HTML5 Network Performance Estimation Tool. (Source Code) MIT Docker

Launch
32
W

Wallos

Lightweight personal subscription tracker

Launch
33
G

Grav

Modern, Crazy Fast, Ridiculously Easy

Launch
34
S

Sandstorm

Personal server for running self-hosted apps easily and securely

Launch
35
C

Caprover

Scalable PaaS (automated Docker+nginx) - aka Heroku on Steroids

Launch
36
N

NGINX

HTTP and reverse proxy server, mail proxy server

Launch
37
N

Node Readiness Controller

Declarative node readiness for Kubernetes

Launch
38
B

bittorrent-tracker

Simple, robust, BitTorrent tracker (client and server) implementation

Launch
39
L

Lighthouse

Automated auditing, performance metrics, and best practices for the web

Launch
40
T

Termix

Clientless web-based server management platform

Launch
41
A

Authelia

The Single Sign-On Multi-Factor portal for web apps

Launch
42
M

Mail-in-a-Box

Turns any Ubuntu server into a fully functional mail server with one command

Launch
43
S

Stalwart Mail Server

All-in-one mail server with JMAP, IMAP4

Launch
44
A

Arduino IDE

The open-source Arduino Software

Launch
45
H

Harbor

Cloud native image registry that stores, signs, and scans content

Launch
46
H

Huly

All-in-One Alternative to Linear/Jira, Slack, Notion, Motion and more

Launch
47
I

imgproxy

Self-hosted solution for image processing needs

Launch
48
Q

Qdrant

Vector Search Engine

Launch
49
G

Gitea

Private, fast, reliable DevOps platform

Launch
50
C

Cloudreve

File management and sharing system, supports multiple storage providers

Launch

About OpenSpec

O

OpenSpec

Plan mode for complex features

OpenSpec is an open-source, spec-driven framework. We help developers plan complex features by creating lightweight spec documents that serve as durable context for their coding agents. With 20k+ GitHub stars, we’re one of the leading spec-driven frameworks, used by thousands of developers and teams to plan and ship with the coding agent of their choice.

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Made by
OpenSpec
Category
Developer Tools
Website
openspec.dev