OpenStreetMap (OSM) has launched an effort to build an open-source version of Google Street View, called (not surprisingly) OpenStreetView. The hope is to use crowdsourcing to generate street-level photography for OSM on a global basis.
To do this, OSM supporter Telenav has built Android and iOS apps for those who want to capture images for upload while driving. There’s some technical complexity to recording and uploading images. Thus it’s really not accessible to general users; the project is for “mappers” and mapping enthusiasts.