CSS Reference vs Penflip
A side-by-side look at CSS Reference and Penflip. For an in-depth review of either product, follow the links below.
CSS Reference
Development
CSS Reference is a free web-based reference for Cascading Style Sheets (CSS) covering the latest web standards. It provides a quick and interactive guide to all common CSS properties and definitions, along with examples.
cssweb-designstyle-sheets
Penflip
Online Services
Penflip is an online collaborative writing and editing platform designed for authors. It allows multiple people to work on book manuscripts or other writing projects together by providing tools for commenting, version history, task management, and document sharing.
collaborationeditingwritingversion-control
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