Wireshark and Fiddler are both exceptional tools that serve vastly different purposes focusing on different OSI layers. Fiddler is an HTTP(S) proxy and Wireshark is a packet sniffer. While you can probably achieve in Wireshark what Fiddler offers, it's going to be an utter pain in the ass.

If you want an open-source alternative to Fiddler, consider mitmproxy [1].

[1] https://github.com/mitmproxy/mitmproxy

Does wireshark allow for editing http requests and resending them?

Not as far as I know. You can use tcpreplay for this, but it's not equivalent to Fiddler:

http://tcpreplay.appneta.com/wiki/overview.html

Whilst it doesn't do everything that Fiddler does, and isn't open-source, I'd say Postman is worth a look for playing around with HTTP requests. The user interface is a lot more user friendly (in my opinion):

https://www.getpostman.com/

Postman doesn't quite fill the niche, because it can't see all http/https traffic (ex: from other non-browser applications). Also, postman can't see anything that happens to the request after it's submitted (ex: by an anti-virus network filter).

Which is not to say that Postman is not good at what it does do.

Fiddler works at a different level, and has an easy way to intercept / inspect SSL requests.

FWIW, I've also had bluescreens on Windows from a certain combination of NPCAP and an Intel Ethernet driver.

Fiddler can install Root CA certificate and use it to sign fake certificates for websites to MitM on HTTPS. If someone knows how to do that in Wireshark, please, tell me.