Mellum-4b-base is JetBrains' first open-source large language model (LLM) optimized for code-related tasks.
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opencode AlternativesOnly apps from the EU
The best alternative to opencode is Mellum, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to opencode and 11 are so hopefully you can find a suitable replacement. Other interesting alternatives to opencode are Mistral Vibe for Code, JetBrains Junie, JetBrains AI Assistant and Hostinger Horizons.
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opencode alternatives are mainly AI Coding Assistants, but if you're looking for AI Writing Tools or Code Editors you can filter on that. Other popular filters include Open Source and Free. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to opencode.
Alternatives list
- 93 Mellum alternatives
Lightning-fast completions, deep code understanding, and agentic software engineering—right where you work.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Mac
- Windows
- Linux
- Online
- Python
+4
You think it, Junie helps make it happen – right in your IDE. Available on IntelliJ IDEA, PyCharm, WebStorm and .
+5
78 JetBrains AI Assistant alternativesWith JetBrains AI, your favorite tools gain new abilities while you are empowered with more information at your fingertips.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- JetBrains Rider
- CLion
- IntelliJ IDEA
- Pycharm
- PhpStorm
- RubyMine
- WebStorm
- ReSharper
AI-driven no-code platform to create full-stack web apps quickly, featuring instant one-click deployment, integrated hosting, domain tools, professional email, real-time editing, version control, and rapid live publishing with a streamlined three-step process.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Online
- Software as a Service (SaaS)
+2
Frontman is an AI Agent that lives in your browser, sees your live DOM, and turns your visual feedback into real changes - no more refresh-and-check cycles.
Cost / License
- Paid
- Open Source
Platforms
- Online
- Next.js
- Wordpress
8 defract alternativesdefract is a local-first desktop app that orchestrates parallel Claude Code agents through a full development lifecycle — story, design, architecture, review, ship.
Cost / License
- Free
- Proprietary
Platforms
- Mac
- Windows
+2
Hivekeep runs a team of specialized personal AI agents on your own server. Each agent has its own identity, expertise, memory and tools. Agents collaborate with each other, remember everything across months in one continuous session, and extend the platform themselves by writing...
+9
ShaggAi is a local-first AI automation and autocomplete platform that turns natural language into real actions on your PC and adds Copilot-style “ghost text” to almost any editor.
Cost / License
- Freemium
- Proprietary
Platforms
- Windows
- Linux
+2
+1
AICode is a VS Code extension that helps software developers maintain large, complex enterprise software using AI.
Cost / License
- Freemium
- Proprietary
Platforms
- Visual Studio Code
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