Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
AG Grid - The best HTML5 datagrid in the world
Sheetgo - Connect spreadsheets. Automate your work.
DataTables - DataTables is a plug-in for the jQuery Javascript library.
Aspose.Cells for Cloud - Aspose.Cells for Cloud is a REST based API for processing spreadsheets in the cloud.
ZingGrid - Built using web components, ZingGrid is a fully-featured, native solution for interactive, mobile-friendly JavaScript data grids and tables.