Jñānasaṅgrahaḥ is a collection of several web-based computational applications related to the Sanskrit language. The aim is to highlight the features of Sanskrit language in a way that is approachable for an enthusiastic user, even if she has a limited Sanskrit background. It comprises of (1) Saṅkhyāpaddhatiḥ, a collection of three ancient Indian numeral systems, Kaṭapayādi Saṅkhyā, Āryabhaṭīya Saṅkhyā and Bhūtasaṅkhyā and (2) Varṇajñānam, an interface and a library of utility functions related to varṇa (phonetic unit of Sanskrit language) information and manipulation.