FlowStorm

FlowStorm is ranked #4 of 27 in debuggers on The Geeks Club. It runs on Linux, macOS, Self-hosted, Windows. There is a free plan.

FlowStorm plans and pricing

Free and open source Free Free as in speech · no money involved · use it however you like flow-storm.org · 3 Oct 2026

Compared on debuggers

Free plan: Yes
Supported languages: Clojure, ClojureScript
Target platforms: Browsers, Node.js, React Native
Remote debugging: Yes
Conditional breakpoints: Yes
Time-travel debugging: Yes

Best FlowStorm alternatives

7.3 LLDB Free plan

7.3 Xdebug £16.67/mo

7.2 GDB Free plan

7.0 IDA Pro Free plan

6.7 RenderDoc Free plan

FlowStorm

What it does: FlowStorm is a tracing debugger for Clojure and ClojureScript.
Recording: It can record and debug code without adding breakpoints or modifying the code.
Stepping and inspection: Its tools include code stepping, value inspection, call stack and function exploration, and exception debugging.
Visualizations: It supports customizable and real-time data visualizations.
Threads: A timeline renders execution events to help users understand how thread instructions interleave.
Interactive programming: Values shown in the UI can be sent to the REPL with one click, and recordings can be analyzed using Clojure.
Plugins: A plugin system lets users add specialized tools to visualize and interact with recordings.
Languages and runtimes: The guide documents Clojure and ClojureScript, including ClojureScript in browsers, Node.js, and React Native.
Integrations: The guide describes an Emacs front end called Cider Storm and setup instructions for VS Code and IntelliJ IDEA.
Requirements: The guide lists JDK 17 or later and Clojure 1.10.0 or later as minimum requirements.
ClojureScript limitation: Vanilla FlowStorm does not currently support async/await introduced in ClojureScript 1.12.145; the guide points to ClojureScriptStorm as an alternative with support.
Maker attribution: The user guide is attributed to Juan Monetta.
Price from: Free

Visit site Alternatives

Where it ranks on The Geeks Club

Best Debuggers in 2026#4 of 27

Is FlowStorm yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote FlowStorm

Sources

flow-storm.github.io/flow-storm-debugger/user_guide.html· checked 3 Oct 2026
flow-storm.org· checked 3 Oct 2026