Firefox Developer Tools vs LLDB
Firefox Developer Tools
firefox-source-docs.mozilla.orgLLDB
lldb.llvm.orgSide by side
| Figure | Firefox Developer Tools | LLDB |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | — | Yes |
| Android | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Debugging Software | 8.7 (#7) | 8.5 (#9) |
| Supported platforms | desktop | The documentation lists macOS, iOS/tvOS/watchOS simulators and devices, Linux, FreeBSD, NetBSD, and Windows among platforms known to work. |
| Purpose | Firefox Developer Tools are built into Firefox and let web developers examine, edit, and debug HTML, CSS, and JavaScript. | LLDB is a high-performance debugger built from reusable components that use LLVM libraries such as the Clang expression parser and LLVM disassembler. |
| Remote debugging | DevTools can connect to targets in other browsers or devices, including Firefox for Android. | LLDB documents remote debugging for platforms including Linux, Windows, Android, and iOS. |
Plans
In their own words
Firefox Developer Tools
Firefox Developer Tools has no write-up on Specifiction yet; its figures are above.
LLDB
LLDB is a free debugger built from reusable components that use LLVM libraries, including Clang's expression parser and the LLVM disassembler. It is the default debugger in Xcode on macOS and supports debugging C, C++, and Objective-C on desktop and iOS devices and simulators. Its tools include breakpoints, watchpoints, process launching, and attaching to programs; remote debugging is also documented for Linux, Windows, Android, and iOS. Expression evaluation uses Clang infrastructure for current C-family language features, multiline expressions, and just-in-time evaluation where supported. Developers can use its shared-library C++ API and Python bindings for scripting, symbolication, disassembly, and inspecting object and symbol files. The lldb-dap adapter connects LLDB functionality to compatible editors and IDEs, including Visual Studio Code, Emacs, vim, and neovim. LLDB is available under the Apache 2.0 License with LLVM exceptions. Windows support remains under active development, with ARM and AArch64 described as more experimental. The lldb-dap interface documents no support for step-back, setting a variable, goto-target, or terminate requests.