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r/mainframe

11.3K members. The best post we have captured here reached 703 upvotes, which works out to 62 per 1,000 members.

62peak upvotes per 1,000 members
11.3Kmembers
703best post
634most comments
137posts we track

Open r/mainframe on Reddit ↗

What actually lands here

The mix of post types among everything we have captured. Posting a link where almost nothing but images lands is wasted effort, and this is the fastest way to see it.

45% 27% 12% 10%
Text 45% Question 27% Link 12% Image 10% Gallery 4% Video 2%

What the ceiling looks like

The biggest posts we have captured here. Links go to the original on Reddit.

Social Security systems to be rewritten in “months” by DOGE

↑ 703 💬 207 text 2025

Looks like the mainframe reality really hit the DOGE team in the face. A true COBOL Mainframe guy statement: "they cannot change the system"

↑ 409 💬 290 video 2025

Does the DOGE team think that they can replace COBOL systems with something else?

↑ 408 💬 634 image 2025

Seen in the Hands Off protests

↑ 358 💬 6 image 2025

Smashing the z/OS LE "Daisy" Chain for Fun and Cease and Desist letters.

↑ 269 💬 52 text 2016

Mainframe appreciation picture

↑ 160 💬 23 gallery 2026

IBM announces the new z17 mainframe

↑ 155 💬 33 link 2025

My new z114

↑ 132 💬 32 gallery 2022

Why Mainframes (and COBOL) Are Secretly Saving Your Tax Dollars

↑ 114 💬 31 text 2025

Merry CHRISTMA!

↑ 99 💬 9 image 2025

Communities its size

Within four times the member count either way, so the comparison is fair. Sorted by upside.

See what is climbing here before you write

ViralHunt tracks Reddit and eight other networks, records how every post grows, and puts what is taking off in front of your team in one list.

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Every figure here is what ViralHunt has captured from r/mainframe, not everything the community has ever posted. We deliberately do not publish an average score: our sample is weighted toward a community's best posts, so an average would be flattering and wrong. Peak per 1,000 members is computed the same way for every community listed. See how we measure.