In case you are not ready (yet) for the latest version of OpenLayers, we provide links to selected resources of older major versions of the software.

Latest v5: v5.3.0 released 2018-11-06 — docs, API & examples

Latest v4: v4.6.5 released 2018-03-20 — docs, API & examples

Latest v3: v3.20.1, released 2016-12-12 — docs, API & examples

Latest v2: v2.13.1 (July 2013 i.e. really old) — you'll find everything you need on the 2.x page

Latest v1 — You're kidding, right?

Please consider upgrading to benefit of the latest features and bug fixes. Get best performance and usability for free by using recent versions of OpenLayers