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Best Debuggers 2026
When you need to trace a program's behavior, a debugger can help you inspect execution and investigate problems. Compare supported languages and target platforms, then consider conditional and exception breakpoints, remote debugging, and core dump debugging. Time-travel debugging is another capability to weigh against the way you work. Free-plan availability and the paid-from price provide cost context. LLDB, RenderDoc, and FLEX are among the entries to compare with the environments you use and the kinds of issues you need to investigate.
02
LLDB
LLDB suits developers debugging C, C++, Objective-C, or Objective-C++ code, including people working with Xcode or compatible editors and IDEs.
AndroidiPhone & iPadWindows+2 Record5.4 Visit
03
Xdebug
WebWindowsMac+2 Record5.2 Visit
04
Black Magic Debug
It suits embedded developers working with supported microcontrollers who want GDB-based debugging across Windows, Linux, or Mac environments.
WindowsMacLinux Record4.9 Visit
05
GDB
GDB suits developers who need to inspect programs across supported operating systems and languages.
WindowsMacLinux Record4.9 Visit
6
Perl Debugger
WindowsMacLinux Free plan Record4.9 Visit It suits Perl developers who want to inspect program execution, set conditional breakpoints, or watch global values.
7
PonyDebugger
iPhone & iPadWebMac+1 Free plan Record4.9 Visit PonyDebugger suits developers debugging native iOS applications who want network, Core Data, view hierarchy, and remote logging tools in Chrome Developer Tools.
8
pyOCD
WindowsMacLinux+2 Free plan Record4.9 Visit pyOCD suits developers working with Arm Cortex-M microcontrollers who want command-line, IDE, or Python API debugging.
9
RenderDoc
AndroidWindowsLinux Free plan Record4.8 Visit RenderDoc suits graphics developers debugging their own programs on supported systems and graphics APIs.
10
FlowStorm
WindowsMacLinux+1 Free plan Record4.7 Visit FlowStorm suits developers working with Clojure or ClojureScript who want to inspect recorded execution and thread behavior.
11
unittest
WindowsMacLinux Free plan Record4.7 Visit unittest suits Python developers who need built-in test organization, assertions, discovery, mocks, and command-line execution.
12
Delve
WindowsMacLinux+2 Free plan Record4.6 Visit Delve suits Go developers who need command-line debugging, editor integration, or a headless API for a separate client.
13
OpenOCD
WindowsMacLinux+1 Free plan Record4.6 Visit OpenOCD suits developers working with embedded target devices who need debugging, programming, or boundary-scan testing.
14
dnSpyEx
WindowsLinux Free plan Record4.5 Visit dnSpyEx suits developers who need to inspect, edit, decompile, or debug .NET assemblies without source code.
15
FLEX
iPhone & iPad Free plan Record4.5 Visit FLEX suits iOS developers who need to inspect and change app state during development.
17
x64dbg
Windows Free plan Record4.4 Visit x64dbg suits Windows users analyzing or reverse-engineering 32-bit and 64-bit executables, including malware-analysis work.
19
OllyDbg
Windows Free plan Record4.3 Visit OllyDbg suits Windows users analyzing 32-bit binary code without source access.
21
Ruby debug
LinuxSelf-hosted Free plan Record4.2 Visit It is for Ruby developers debugging MRI 2.7-or-later programs locally or remotely.
23
Erlang Debugger
WindowsMacLinux Free Record4.0 Visit It suits Erlang developers familiar with the language who need local or remote process inspection on Linux, macOS, or Windows.
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