# Fonts Like Oxygen Mono

12 open fonts whose letters are closest to Oxygen Mono, ranked by a glyph comparison. All free for commercial use.

## Quick Answer

The closest open font to Oxygen Mono is DejaVu Mono (similarity 84), then Noto Sans Mono and Reddit Mono. DejaVu Mono is released under the SIL Open Font License 1.1 and is free for commercial use.

## Ranked Open Lookalikes (12 Fonts)

| Rank | Font | Similarity Score | Licence | Details |
| :--- | :--- | :--- | :--- | :--- |
| #1 | **DejaVu Mono** | 84 / 100 | OFL-1.1 | [/fonts/dejavu-mono/](/fonts/dejavu-mono.md) |
| #2 | **Noto Sans Mono** | 81 / 100 | OFL-1.1 | [/fonts/noto-sans-mono/](/fonts/noto-sans-mono.md) |
| #3 | **Reddit Mono** | 79 / 100 | OFL-1.1 | [/fonts/reddit-mono/](/fonts/reddit-mono.md) |
| #4 | **Ubuntu Mono** | 79 / 100 | UFL-1.0 | [/fonts/ubuntu-mono/](/fonts/ubuntu-mono.md) |
| #5 | **Noto Mono** | 79 / 100 | OFL-1.1 | [/fonts/noto-mono/](/fonts/noto-mono.md) |
| #6 | **Fira Code** | 77 / 100 | OFL-1.1 | [/fonts/fira-code/](/fonts/fira-code.md) |
| #7 | **iA Writer Mono** | 77 / 100 | OFL-1.1 | [/fonts/ia-writer-mono/](/fonts/ia-writer-mono.md) |
| #8 | **JetBrains Mono** | 77 / 100 | OFL-1.1 | [/fonts/jetbrains-mono/](/fonts/jetbrains-mono.md) |
| #9 | **Ubuntu Sans Mono** | 76 / 100 | UFL-1.0 | [/fonts/ubuntu-sans-mono/](/fonts/ubuntu-sans-mono.md) |
| #10 | **IBM Plex Mono** | 76 / 100 | OFL-1.1 | [/fonts/ibm-plex-mono/](/fonts/ibm-plex-mono.md) |
| #11 | **Roboto Mono** | 76 / 100 | OFL-1.1 | [/fonts/roboto-mono/](/fonts/roboto-mono.md) |
| #12 | **Martian Mono** | 75 / 100 | OFL-1.1 | [/fonts/martian-mono/](/fonts/martian-mono.md) |

## Scoring Method

62 letters and digits (A-Z a-z 0-9) rendered at 160px cap height on a 32x32 grid with 3px gaussian blur, combined with edge-orientation texture (15% weight). Scores are normalized so that 0 represents an average pair of fonts across the 1571 compared fonts, and 100 represents identical letter shapes. Computed on 2026-10-22 using glyph-shape + edge-texture v2.

## Machine API

JSON representation available at [/api/fonts-like/oxygen-mono.json](/api/fonts-like/oxygen-mono.json).