DOAJ 收录的OA期刊数量非常多,属于目前最好的的OA期刊目录网站。DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.
UI-cloud素材搜索引擎 UI-cloud素材搜索引擎。UICloud collects the best user interface designs and provides a search engine for you to find the best UI elements that you need.