Apple has opened up its iCloud Web site to anyone who signs up for a free Apple ID, providing access to Apple’s iWork Web apps — Pages, Numbers, and Keynote — plus 1 GB of iCloud storage. The iWork Web apps, which remain labeled as “beta” since their debut in October 2013, are less fully featured than their sibling apps on iOS and OS X. Nonetheless, the Web apps produce documents that are completely compatible with the Mac and iOS apps — and vice-versa.
Anyone who wishes to use the iWork Web apps can sign up for a free account by browsing to icloud.com and clicking Create Apple ID. The signup process requires you to supply an email address, a strong password, and the answers to a set of security questions. Apple then sends a six-digit code to the email address you supplied; you enter that code on the iCloud site to complete the signup process.
After that, you can log in to iCloud on any supported browser — the iCloud site and its Web apps require a recent version of Safari, Google Chrome, Firefox, or Internet Explorer — and use the Web versions of Pages, Numbers, and Keynote.
Web-only users cannot upgrade their iCloud accounts to get more than 1 GB of iCloud storage or access any other iCloud features; owning a Mac or iOS device is required to do that (Mac and iOS device owners get 5 GB of storage for free automatically). An Apple support document provides more information about Web-only iCloud Access.