Pencil Project vs tSIP
A side-by-side look at Pencil Project and tSIP. For an in-depth review of either product, follow the links below.
Pencil Project
Development
Pencil Project is a free and open source GUI prototyping and mockup tool. It allows users to create wireframes and prototypes for software interfaces and websites quickly and easily, without programming knowledge.
wireframingmockupsguidesign
tSIP
Social & Communications
tSIP is an open source SIP softphone and SIP client for making VoIP calls and sending instant messages over the Internet. It supports standard SIP features like audio/video calling, instant messaging, presence, and more.
voipsipsoftphonecallingmessaging
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