Apps with 'Double Donut Chart' feature
IPFS is a global, versioned, peer-to-peer filesystem. It combines good ideas from Git, BitTorrent, Kademlia, SFS, and the web.
Keikai is the only Web Spreadsheet designed and architected for big data — and is the fastest web spreadsheet regardless of size. Other advanced features include embeddable in your Web Apps, providing true Excel experiences and more.
Futuramo Time Tracker is a time tracking, work management and productivity app used by freelancers and businesses to track, analyze and manage work time more effectively. The advanced statistics provide great insights on daily work habits.
10 in 1 Excel Pro Add-in, Compatible with Excel 2010, 2013 and 2016. UDT works under Mac Excel 2016 too. UDT support Gauge Charts,Bullet Charts, Variance Charts, Treemaps, Waterfall Charts, PM Tools - Gantt Chart Maker, 200+ fully editable HD Maps.
100% Free Excel Add-In for Waterfall, Gantt, QIGS, Mirror, BubbleX & Double Donut Charts and Live FX Rates. Also features usefull shortcuts and Excel-internal Web Browser. Supports 9 languages (EN,FR,DE,ES,TR,RU,AR,CH,IN).