Telesystem is a private equity firm with a global presence, focusing on investments in media, healthcare, clean energy, communication, and internet technology sectors. The firm has a particular interest in early-stage software companies, especially those based in Canada. Telesystem typically invests across various stages, from Series A to Series D, and also participates in convertible note rounds.

Notable portfolio companies include Clustra Systems, eBillme, Hortau, and ZendyHealth. With offices in Montreal, Boston, London, and Johannesburg, Telesystem leverages its international network to support its investments. The firm's long-standing presence in the industry, dating back to 1995, demonstrates its commitment to fostering innovation and growth in the technology sector.