Fiddler

Fiddler is a musician who plays the fiddle or violin, especially in folk and traditional music. The term 'fiddle' is often used for non-classical playing, while 'violin' is common in classical contexts. Fiddlers appear in many traditions, including Irish and Scottish folk, American old-time and bluegrass, Cajun, and Balkan music. Repertoire emphasizes tunes and dance pieces, usually learned by ear and shared within communities. Performers range from solo artisans to ensembles, and styles vary in ornamentation, tuning, and accompaniment.

Fiddler on the Roof is a 1964 Broadway musical with music by Jerry Bock, lyrics by Sheldon Harnick, and a book by Joseph Stein, based on Sholem Aleichem's stories about Tevye the dairyman. It explores tradition, family, and change in a Jewish village in late 19th‑century Russia. The title suggests a fiddler balancing tradition and life. The musical opened on Broadway in 1964, won multiple awards, and was adapted into a 1971 film directed by Norman Jewison; it remains widely performed worldwide.

Fiddler is a web debugging proxy that logs HTTP and HTTPS traffic between a computer and the Internet, allowing inspection and modification of requests and responses. It can decrypt TLS/SSL, set breakpoints, and rewrite data to test error conditions or security scenarios. Used by developers and testers to diagnose, debug, and optimize web applications, Fiddler supports multiple platforms through its cross‑platform variant. It is a common tool in quality assurance and performance testing, helping users understand traffic flow, diagnose issues, and verify behavior under varied network conditions.