Startup Stash - A curated directory of 400 resources & tools for startups
Periodica - Periodic Table - Download this app from Microsoft Store for Windows 10. See screenshots, read the latest customer reviews, and compare ratings for Periodica - Periodic Table.
Startup Buffer - Startup Buffer is a premium startup directory for emerging startups all around the world.
Ptable - Interactive periodic table with dynamic layouts showing names, electrons, oxidation, trend visualization, orbitals, isotopes, and compound search. Full descriptions from write-up sources.
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Atomic - Periodic Table - Bring a Periodic Table with you anywhere you go