- General catalogs - Culture Collections List (Phycology Net)
- General catalogs - Microbe Strain Information

The StrainInfo.net bioportal was established to stimulate a movement towards using multi-perspective integrated information in a broadened biological and clinical context.
- General catalogs - World Data Centre for Microorganisms

The WDCM provides a comprehensive directory of culture collections, databases on microbes and cell lines, and the gateway to biodiversity, molecular biology and genome projects.
- Taxonomy - AlgaeBase

AlgaeBase is a database of information on algae that includes terrestrial, marine and freshwater organisms. At present, the data for the marine algae, particularly seaweeds, are the most complete.
- Taxonomy - Plankton*Net : Biodiversity Data Provider

A web site dedicated to plankton images and taxonomy.
Banco Español de Algas

The Spanish Bank of Algae (BEA-Banco Español de Algas) is a service of the Scientific and Technological Park Foundation of the University of Las Palmas de Gran Canaria (ULPGC),which objectives are the isolation, identification, characterization, conservation and provisioning of microalgae and cyanobacteria.
Canada - Canadian Phycological Culture Centre (CPCC)

The University of Toronto Culture Collection of Algae and Cyanobacteria (UTCC) has recently changed its name and is now known as the Canadian Phycological Culture Centre (CPCC).
Europe - ACUF (Extremophiles), Naples

The algal collection (ACUF) at the Dipartimento di Biologia, Università Federico II of Naples, Italy, is represented by over 600 microalgal strains belonging to Cyanophyta, Chlorophyta, Rhodophyta and Bacillariophyceae. The extremophilic algae (thermo-acidophilic and acidotolerant strains isolated from European and Extraeuropean acidic sites) are widely represented (over 250 strains). 
Europe - CCAP UK

The Culture Collection of Algae and Protozoa
Europe - Culture Collection of Baltic Algae - Gdansk

The CCBA is part of the University of Gdansk
Europe - SAG Gottingen

Experimental Phycology and Culture Collection of Algae.
Europe - SCCAP Scandinavian Culture Center
France - Algobank-Caen

Culture Collection.
France - PCC Pasteur Cyanobacteria
France - Thonon Culture Collection (Freshwater)

Contains mostly diatoms, green algae and cyanobacteria isolated from French lakes and rivers
Japan - NIES

National Institute for Environmental Studies 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506 JAPAN
Japan - NITE (holding former MBIC strains)

Microalgal strains maintained by Marine Biotechnology Institute Co., Ltd., Culture collection (MBIC), Kamaishi, Japan, were transferred to NITE in October 2006, and about 330 strains shown below are now available for distribution
USA - Antarctic Protist Culture Collection

Maintained by Betty Gast in Woods Hole.
USA - ARC - Algal Resources Collection

The collection is a major supplier of toxic algae for researchers all over the world, as many collaborations, loans and exchanges are made to investigators each year.  The collection grew quickly to include over seven hundred HAB strains from seven classes encompassing a wide geographic range.  In 2013 the collection was moved to the newly constructed MARBIONC (Marine Biotechnology in North Carolina) building in Crest Research Park, developed by UNCW. 
USA - NCMA Bigelow

(Ex-CCMP) Provasoli-Guillard National Center for Culture of Marine Phytoplankton. One of the largest culture collection in the world for marine microalgae.