# otvdm (winevdm)

6 Hacker News commenters recommended otvdm (winevdm) and 1 criticized it, November 2025 to November 2026. It was recommended in 5 of 13 months.

**Verdict:** Runs 16-bit Windows programs on modern 64-bit Windows by emulating the processor and translating API calls. Most programs work, though not all are guaranteed.

## Why people recommend it

- Runs 16-bit Windows apps on 64-bit Windows (2 comments): "my little exe ran on a Windows 10 64 bit machine just fine" ([source](https://news.ycombinator.com/item?id=49000452)) "Can run on modern 64-bit windows too with otvdm" ([source](https://news.ycombinator.com/item?id=48999980))
- Old 16-bit programs work as expected (3 comments): "It is surprisingly capable, I was able to run a 16-bit VB program that used a serial based optical modem without issue." ([source](https://news.ycombinator.com/item?id=47534598)) "It emulates the processor and translates 16-bit api calls into 32-bit api calls so things work as you'd expect." ([source](https://news.ycombinator.com/item?id=48527594)) "will run most of them fine" ([source](https://news.ycombinator.com/item?id=48526747))

## Alternatives hackers recommend

- [XWayland](https://hackerapproved.com/p/xwayland.md): 13 recommend
- [WinBoat](https://hackerapproved.com/p/winboat.md): 9 recommend
- [Windows 9x Subsystem for Linux](https://hackerapproved.com/p/windows-9x-subsystem-for-linux.md): 8 recommend
- [Wayback](https://hackerapproved.com/p/wayback.md): 6 recommend

## Cite as

Hacker Approved, "otvdm (winevdm)", https://hackerapproved.com/p/otvdm/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).