Code::Blocks vs StackBlitz

Code::Blocks is a free IDE for C, C++ and Fortran on Linux, macOS and Windows. Its editor provides syntax highlighting, code folding, tabs, code completion, a class browser, and smart indent. A custom build system supports parallel builds, multi-target projects, workspaces, and inter-project dependencies. Listed compiler options include GCC, MSVC++, clang, Digital Mars, Borland C++ 5.5, and Open Watcom. The debugger interfaces with GNU GDB and also supports MS CDB, which the site describes as not fully featured. Code::Blocks imports MSVC projects and workspaces, although assembly code is not supported in those imports, and it imports Dev-C++ projects. A plugin framework allows added functionality through installed or written plugins; some are included in official releases and others are maintained externally. The software uses GNU GPL version 3, while its SDK uses GNU LGPL version 3, allowing closed-source plugins to link against it. Documentation is provided through a manual, wiki, and forums.

StackBlitz is a browser-based full-stack web IDE for the JavaScript ecosystem. Its WebContainers run Node.js development environments inside a browser tab, and the service lists millisecond startup and offline work. StackBlitz presents rapid prototyping and coding interviews as use cases. Integrations include a Figma plugin, Storybook addon, and userscript for opening GitHub projects in Codeflow. Viewing and editing projects needs no account, but saving or collaborating requires GitHub. WebContainers depend on SharedArrayBuffer and cross-origin isolation. Enterprise options connect GitHub Enterprise, GitLab, Bitbucket, private npm registries, JFrog Artifactory, and Sonatype Nexus. Enterprise code runs in an isolated browser sandbox with SAML2 single sign-on, an admin portal, and self-hosting on bare metal or in a VPC through Kubernetes. Plans include free access and a 14-day trial; listed plan prices are not provided.