CSipSimple vs Pencil Project
A side-by-side look at CSipSimple and Pencil Project. For an in-depth review of either product, follow the links below.
CSipSimple
Social & Communications
CSipSimple is an open source SIP client for Android that allows you to make VoIP calls over Wi-Fi or mobile data. It supports common SIP features like call transfer, call forwarding, call waiting, 3-way conferencing, etc.
voipsipandroidcallswifimobile-data
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
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