head to head · open source
symphony vs Valour
symphony has 2,952 GitHub stars, 508 forks, 2 open issues and last shipped 20 days ago. Valour has 400 stars, 43 forks, 88 open issues and last shipped 4 days ago. symphony leads on adoption by 638% (2,952 vs 400 stars). symphony is written in Java under AGPL-3.0; Valour is written in C# under AGPL-3.0. symphony has attracted 17% as many forks as stars, Valour 11%. Valour was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| symphony | Valour | |
|---|---|---|
| GitHub stars | ★ 3.0K | ★ 400 |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Java | C# |
| Last push | 2026-10-16 | 2026-11-01 |
| Forks | ⑂ 508 | ⑂ 43 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick symphony if
- You weight community size — 3.0K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick Valour if
- You want the Valour feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches C#
- You evaluated both and Valour fits your workflow better
About symphony
下一代的社区系统，为未来而构建 English 💡 简介 Symphony（[ˈs ɪmf əni]，n.交响乐）是一个现代化的社区平台，因为它： 实现了面向内容讨论的论坛 实现了面向知识问答的社区 包含了面向用户分享、交友、游戏的社交网络 100% 开源 欢迎到 Sym 官方讨论区了解更多。同时也欢迎关注 B3log 开源社区微信公众号 B3log开源 ： ⚡ 动机 很多社区论坛系统： 界面风格老式，没有跟上时代发展的步伐 缺少创新、好玩的特性，缺少现代化的交互元素和用户体验 缺乏考虑实际运营需求，管理功能过于单一 细节不够精致、缺乏长期维护 ✨ 特性 Sym 简介幻灯片 Sym 功能点脑图 内容编辑器 Markdown（GFM） Emoji 上传文件 图片 文件 单独渲染 MP3 单独渲染视频 支持录音 剪贴板处理 粘贴内容处理为 Markdown 粘贴图片自动重新上传 @用户 数学公式（LaTeX）、流程图支持 快捷键支持 工具栏 表情 粗体 斜体 引用 无序列表 有序列表 链接 上传 预览 全屏 编辑模式 传统的 Markdown 分屏编辑预览 保留 Markdown 标记符的即时渲染 类富文本编辑器的所见即所得 注册 用户名 Email 邀请码（如果管理员启用） 邀请链接 验证码 邮件验证 新手向导 上传头像 关注标签 关注用户 帮助指引 登录 账户（用户名/Email） 密码 忘记密码 Email 验证码…
read the full symphony overview →
About Valour
Valour Valour is an open source community platform built with .NET and Blazor. Communities are called planets. Each planet can have chat channels, thread feeds, wikis, voice and video calls, roles, an economy, and a village where members walk around and meet. The client supports tabs, splits, and multiple open conversations. Use the app at app.valour.gg or visit valour.gg for the public website. The documentation index covers development, hosting, and architecture. Codebase The web host references the shared client UI. The server serves API and SignalR requests and can serve the browser client and its static…
read the full Valour overview →
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Frequently asked questions
Is symphony or Valour more popular?
symphony has 2,952 GitHub stars and Valour has 400. symphony has the larger community by that measure.
Are symphony and Valour free?
Both are open source. symphony is licensed under AGPL-3.0 and Valour under AGPL-3.0. Neither carries a licence fee.
What is the difference between symphony and Valour?
symphony is written in Java and Valour in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, symphony or Valour?
Choose symphony if you want the larger community (2,952 stars) or its AGPL-3.0 licence terms. Choose Valour if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.