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VSCodium vs SlickEdit: catalog facts
VSCodium	SlickEdit
Free Free and open source under the MIT licence.	Paid One-time purchase of $125 for Standard or $299 for Pro, with a free trial.
Windows, macOS, Linux	Windows, macOS, Linux
The same editor as VS Code, built from the same MIT-licensed source without Microsoft branding Telemetry is disabled in the default configuration	One licence covers Windows, macOS, Linux and Raspberry Pi Opens files up to 2 TB
Extensions come from Open VSX, so a few marketplace-only extensions are missing Microsoft’s proprietary extensions, including the C# debugger and Remote Development, are not licensed for it	Paid software with no free edition beyond the trial Project, debugging and version control features require the more expensive Pro edition
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.