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MicroSIP vs Bria Solo: catalog facts
MicroSIP	Bria Solo
Free Free and open source under the GPL v2.	Paid A free trial is offered, and multiple VoIP accounts require a paid plan.
Windows	macOS
Small and light on system resources Works with standard SIP providers and PBX systems	Voice and video calling with call control features Works with up to five VoIP or call server accounts
Windows only; other desktops need Wine No mobile apps	Requires a separate VoIP service or call server Multi-account support is limited to the paid plan
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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