Compare software

MicroSIP vs Smart-SIP-Phone: catalog facts
MicroSIP	Smart-SIP-Phone
Free Free and open source under the GPL v2.	Freemium Free standard version, with a paid Pro version and branding options for businesses.
Windows	Windows, macOS, Linux, Android, iOS
Small and light on system resources Works with standard SIP providers and PBX systems	Works with any SIP PBX Native packages for many Linux distributions plus Windows and macOS
Windows only; other desktops need Wine No mobile apps	Proprietary software Needs a SIP account or PBX to be useful
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License: Proprietary
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 1, 2026

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