Best GDB Alternatives in 2026
Updated
20 tools from debuggers ranked against GDB on the same published basis.
- 1GDB vs LLDB
- 3GDB vs FlowStorm
- 4GDB vs IDA Pro
- 5GDB vs RenderDoc
- 6GDB vs Xdebug
- 7GDB vs Delve
- 8GDB vs SEGGER Ozone
- 9GDB vs UDB
- 10GDB vs TRACE32
- 11GDB vs Erlang Debugger
- 12GDB vs OpenOCD
- 13GDB vs Perl Debugger
- 14GDB vs PonyDebugger
- 15GDB vs WinDbg
- 16GDB vs Black Magic Debug
- 17GDB vs CUDA-GDB
- 18GDB vs dnSpyEx
- 19GDB vs pyOCD
- 20GDB vs FLEX
- 21GDB vs UDE Universal Debug Engine
GDB alternatives compared
| # | Tool | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | LLDB | 7.7 | Free plan | Free | Android, iOS, Linux, Mac, Windows |
| 3 | FlowStorm | 7.2 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 4 | IDA Pro | 7.2 | Free plan | $91.58/mo | Linux, Mac, Windows |
| 5 | RenderDoc | 7.0 | Free plan | Free | Android, Linux, Windows |
| 6 | Xdebug | 7.0 | No | £16.67/mo | Linux, Mac, self-hosted, Web, Windows |
| 7 | Delve | 6.8 | No | — | API, Linux, Mac, self-hosted, Windows |
| 8 | SEGGER Ozone | 6.7 | No | — | Linux, Mac, Windows |
| 9 | UDB | 6.7 | No | — | Browser, Linux |
| 10 | TRACE32 | 6.3 | No | — | Windows, Mac, Linux |
| 11 | Erlang Debugger | 6.0 | No | — | Windows, Mac, Linux |
| 12 | OpenOCD | 6.0 | No | — | Windows, Mac, Linux |
| 13 | Perl Debugger | 6.0 | No | — | Linux, Mac, Windows |
| 14 | PonyDebugger | 6.0 | No | — | Web, Mac, iOS |
| 15 | WinDbg | 6.0 | No | — | Windows |
| 16 | Black Magic Debug | 5.9 | No | — | Windows, Mac, Linux |
| 17 | CUDA-GDB | 5.9 | No | — | Linux |
| 18 | dnSpyEx | 5.9 | Free plan | Free | Linux, Windows |
| 19 | pyOCD | 5.9 | No | — | Windows, Mac, Linux |
| 20 | FLEX | 5.8 | No | — | iOS |
| 21 | UDE Universal Debug Engine | 5.8 | No | — | Windows |
Make your tool an alternative to GDB
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about GDB alternatives
What is the best alternative to GDB?
LLDB, number 1 in debuggers with a score of 7.7 out of 10. The others here: FlowStorm, IDA Pro, RenderDoc and 16 more.
What is the best free alternative to GDB?
LLDB is the best-ranked alternative with a free plan. 5 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.