Screenshot Machine - Screenshot machine is an online website capturing service. Creates a screenshot or thumbnail of any online web page in couple of seconds for free.
PubMed.gov - PubMed comprises more than 29 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
URL2PNG - Screenshots as a Service. Capture snapshots of any website, right in your app, quickly and reliably.
Biohunter - Biohunter is a one-stop portal for literature search, batch-download PDFs and reference manager
ApiFlash - ApiFlash is a powerful serverless screenshot API built with Chromium and AWS Lambda. It can easily scale to millions of screenshots per day and has an ever growing number of satisfied big clients.
Hubmed - An alternative interface to the PubMed medical literature database.