Alchemy Website
The site has 1700+ images, 200+ complete alchemical texts, extensive bibliographical material on the printed books and manuscripts, numerous articles, introductory and general reference material, a searchable database (Adam McLean)

The ‘Analyst’ Controversy
Texts and resources relating to the controversy generated by 1the philosopher George Berkeley’s criticisms of Newton’s mathematics in 1734 (David R Wilkins)

The art of Renaissance science
Essay on ‘the genius of Galileo and the relation between his role in the Scientific Revolution and the equally remarkable achievements of Renaissance artists’ (Joseph W Dauben)

The Chymistry of Isaac Newton
a scholarly online edition of Newton’s alchemical manuscripts, which include laboratory notebooks, indices of alchemical substances, and his transcriptions from other sources (William R Newman, Indiana University)

The Clusius Project
research project on the rise of European botany as a field of specialist, scientific expertise during the 16th-century, and particularly focusing on the botanist Carolus Clusius, including a digitized collection of 1,300 of his letters in a searchable database (Leiden University)

Early Modern Science links
Topics include astronomy, exploration, the Church, individual scientists (Jerry Bieber)

Experience and Experiment in Early Modern Europe
Bibliography (Folger Institute)

The First Cognitive Revolution
Bibliography on science and philosophy, seventeenth to eighteenth centuries (Francis Steen)

The Galileo Project
Site devoted to Galileo Galilei and the science of his times: includes biography, bibliography, information on the instruments he used, maps, timelines, and ‘Galileo’s Daughter’

Linda Hall Library History of Science Collection
collection of digital editions of significant 16th- to 18th-century scientific texts (Cultural Heritage Language Technologies)

Hooke Folio Online
digital edition containing extracts from the Royal Society’s Journal Books, followed by the rough minutes for the period of Hooke’s secretaryship, and a number of supplementary papers (Royal Society/Centre for Editing Lives and Letters)

Jesuits and the Sciences, 1540-1995
Online exhibit with extensive sections on the early modern period (Loyola University Science Library) (NB: Wayback Archive)

John Dee and the English Calendar: Science, Religion and Empire
seminar paper by Robert Poole, on an always-fascinating Renaissance figure, the Welsh polymath John Dee (mathematician and magician among other talents)
Institute of Historical Research e-seminars (1996-98, exact date unknown)

John Evelyn: No High Heels in Paradise
Review by Keith Thomas of a new scholarly edition of Elysium Britannicum, or the Royal Gardens by John Evelyn: full of information on Evelyn, his gardening and politics (London Review of Books)

John Graunt’s Observations on the Bills of Mortality
Full text of this 1662 work - a remarkable early piece of statistical analysis (Ed Stephan)

The Linnaean Correspondence
digital edition of the correspondence of the botanist Carl Linnaeus, including searchable database, images of manuscripts and reproductions of printed editions (collaborative project headed by the Swedish Linnaeaus Society)

Luther and Science
Essay, written by a professor of physics, examining the attitudes of Luther and his followers towards science (particularly astronomy) (Donald H Kobe)

Seventeenth and eighteenth-century Mathematicians
Short biographies of mathematicians and some other scientists (David R Wilkins)

The Macclesfield and Portsmouth collections of Newton manuscripts
digitised versions of Newton’s scientific manuscripts held by the Cambridge University Library; images only, searchable by catalogue descriptions (DSpace@Cambridge)

The Newton Project
this project aims to make all Newton’s printed and manuscript writings freely available online, covering his best-known scientific work but also his theological texts and alchemical tracts. It will provide fully searchable transcripts and page images, translations of non-English texts, and more.

The Plurality of Worlds
Microscopes and telescopes equally opened up new worlds in the later seventeenth and eighteenth centuries, here, this ‘giant leap in perspective’ is explored through contemporary writings (Norton Topics Online)

The Robert Boyle Project
Resources on the scientist Robert Boyle, including biographical information, bibliography, papers, teaching resources and selected Boyle manuscripts

Catalogue of the Scientific Community in the 16th and 17th Centuries
A database of over 600 detailed biographies, fully searchable (Richard Westfall, Albert van Helden)

The Scientific Revolution
Primary source extracts and web links (Internet Modern History Sourcebook)

Sir Joseph Banks’ papers
the wide-ranging papers (digitised images) of an eighteenth-century naturalist, traveller,
correspondent and royal adviser, who travelled with Cook on The Endeavour and was involved in the ill-fated expedition of The Bounty (fully indexed) (State Library of New South Wales)

Spirits, witches and science
Article by Richard Olson on the connections between the developments in seventeenth-century science and beliefs in the supernatural
From Skeptic 1:4 (1992) (NB: at Wayback Archive)