Tookapic Stock Photos

Tookapic was launched as a platform to help users to “develop a habit of daily photo taking in a fun and addictive way”. The habit is gamified where users will be awarded with points and badges. Users are also able to share their images for reuse. The stock photos section of the website presents the pictures shared by the community. As of November 2015, there are more than 14,000 stock photos uploaded with 66% free for download. Users can search or browse by different categories.

Photogen

Photogen provides free high-resolution photographs for download and reuse. Users can search by keywords or browse by categories.

Pixabay

Pixabay is a photo community that provides images on public domain. The site contains curated images contributed by photographers around the world. As of September 2015, there are more than 470,000 photographs, vectors and illustrations. Users can search by keywords or browse by various categories.

Split Shire

Developed by Italian photographer and graphic designer, Daniel Nanescu, Split Shire provides copyright-free photographs for designers, bloggers, social marketeers and commercial companies. Users can search or browse images by categories.

PLiXS Image Database

Founded by a startup based in Switzerland, PLiXS is a database of free high resolution images. As of August 2015, there are close to 3,400 images, contributed by photographers around the world. Users can search or filter their search by photo filters and categories.

Skitterphoto

Skitterphoto provides photographs that are taken by three photographers based in Groningen, The Netherlands. Since the platform launched in 2014, a photo is uploaded every single day. Users can search or browse by categories.

Callisphere by UC Libraries

Callisphere is “the University of California’s free public gateway to a world of primary sources”. Powered by the California Digital Library (CDL), the platform currently have more than 230,000 images, contributed by 139 archives, libraries, museums, and historical societies in California. Users may search or explore the images across different themes or topics.

IM Free Collections

Provided by web design agency, IM Creator Ltd., IM Free Collections is “a curated collection of free web design resources”. The images are from various image sources that provided these images on Creative Commons licenses. Users can search or browse by various categories.

Ad*Access by Duke University (Libraries)

Funded by the Duke Endowment “Library 2000” Fund, Ad*Access is a project that presents images and database information for over 7,000 advertisements printed in U.S and Canadian newspapers and magazines between 1911 and 1955. The images provide a perspective of major campaigns and companies in 5 main areas: Radio, Television, Transportation, Beauty and Hygiene, and World War II.

Prints & Photographs Online Catalog (PPOC)

Driven by the LOC Prints & Photographs Division, PPOC contains catalog records and digital images from their holdings. These includes photographs, fine and popular prints and drawings, posters, and architectural and engineering drawings.