Should I choose VSCode or VSCodium?

The choice between VSCode and VSCodium is fundamentally a decision about your relationship with Microsoft's telemetry and licensing, not a comparison of core editing capabilities. Both editors are built from the same open-source codebase, Visual Studio Code - Open Source (vscode), meaning their fundamental performance, extension support (with one critical caveat), and user interface are virtually identical. The primary distinction is that VSCodium is a distribution that removes all Microsoft telemetry, branding, and proprietary components, providing a binary compiled directly from the source under a more permissive license. Therefore, if your priority is absolute privacy and adherence to free software principles without any Microsoft services, VSCodium is the unequivocal choice. If you value seamless integration with Microsoft's ecosystem and guaranteed compatibility with all extensions, official VSCode may be preferable despite its data collection.

The most significant technical implication of this choice revolves around the Microsoft Marketplace for extensions. Official VSCode is configured by default to connect to Microsoft's proprietary marketplace, which hosts the vast majority of extensions, including those published by Microsoft itself like the powerful C/C++ and Python tools. VSCodium, by default, redirects to the Open VSX Registry, a vendor-neutral open-source alternative. While many popular extensions are published to both, some are not, potentially requiring manual installation for specific tools. Furthermore, extensions that utilize proprietary Microsoft services (such as certain live share or GitHub Copilot features) may encounter limitations or require additional configuration in VSCodium. For most mainstream development workflows using open-source languages and frameworks, this difference is negligible, but it is the primary functional divergence users must assess.

From a privacy and licensing perspective, the mechanism is clear-cut. Microsoft's VSCode includes telemetry collection, which the company states is used to improve the product, and it integrates services like GitHub Accounts and telemetry that communicate with Microsoft servers. The build process for the official binary also includes proprietary components not in the open-source repository. VSCodium's build scripts strip out these elements, disable telemetry at a code level, and distribute the result under the MIT license. This makes VSCodium a purer embodiment of the open-source project, appealing to users in regulated environments, free software purists, or anyone skeptical of corporate data collection. However, it also means forgoing the curated update channel and the convenience of a fully managed service bundle from Microsoft.

Your decision should hinge on whether the principle of using a completely telemetry-free, Microsoft-disconnected build outweighs the convenience of the fully integrated official distribution. For developers deeply embedded in the Microsoft ecosystem (Azure, .NET, GitHub) who are unconcerned by standard telemetry, official VSCode offers a seamless experience. For those developing in open-source stacks, working in environments with strict compliance requirements, or philosophically opposed to proprietary elements in their tools, VSCodium provides an otherwise identical editor that aligns with those values. There is no performance or stability penalty for choosing VSCodium; the trade-off exists solely in the realms of convenience, ecosystem integration, and ideological preference.