The short answer. Camera Preview previews the webcam, takes photos and uses it as a mirror. Capso records the screen with annotations, OCR and webcam overlays. OpenScreen creates polished screen demos and walkthrough videos. OverSight is the odd one and the most important: it monitors microphone and webcam access and tells you when something is using them. That is a different product from the other three and the reason this category is worth reading — a camera utility that uses the camera and a camera utility that watches who else is using the camera are opposites.
This guide covers 4 webcam apps for macOS. Every fact below is drawn from the same verified records that back each app’s own page. The recommendations are our editorial judgment, not payment.
Quick comparison
| App | What it is | Pricing | Licence | Version |
|---|---|---|---|---|
| Camera Preview | camera utility | Free | not published | 1.8.2 |
| Capso | screenshot tool | Open source | not published | 1.1.2 |
| OpenScreen | design tool | Open source | MIT | 1.5.0 |
| OverSight | security tool | Open source | GPL-3.0 | 2.4.0 |
What actually decides this
- Using the camera or watching who uses it. A preview app opens the camera so you can see yourself. A monitor watches for other apps opening it and alerts you. The second is a security tool and the first is a utility, and they are both called webcam apps.
- Overlay onto a recording or standalone. A webcam overlay that lands in the corner of a screen recording needs to be composited at capture time, not added afterwards. Whether the tool records the camera and the screen together, or only produces the overlay, decides which one you need.
- What it records, and where that goes. A photo, a clip and a mirror that keeps nothing are three outcomes with three different privacy profiles. A camera app that writes to disk by default is keeping something you may not have asked it to keep.
- How long it can run. A mirror is used for seconds and a monitor for weeks. The battery and thermal profile of holding the camera open is the constraint on the first and irrelevant to the second.
- What it does when the camera is already in use. macOS allows one app at a time in practice, and the question is whether the tool tells you or fails silently. A monitor is the tool that answers this question for every app, which is the case for having one.
Our picks
- Camera Preview — Its record describes previewing the webcam, taking photos and using it as a mirror, which is the mirror case. Choose it when you want to see yourself, take a photo, or use the camera as a mirror.
- Capso — Its record describes an open-source screenshot and screen recording tool with annotations, OCR and webcam overlays, which is the overlay case. Choose it when you want the webcam as an overlay inside a screen recording with annotations.
- OpenScreen — Its record describes an open-source tool for creating polished screen demos and walkthrough videos, which is the demo case. Choose it when the deliverable is a polished demo video rather than a photo.
- OverSight — Its record describes a tool for monitoring microphone and webcam access, which is the monitoring case. Choose it when what you want is to know when anything else is using the camera or the microphone.
The apps
Camera Preview
Camera Preview is a camera utility for macOS. Preview your webcam, take photos, and use it as a mirror. It is free.
What it does. Preview your webcam and take photos. Instant access to your Mac.
Camera Preview is listed with current version 1.8.2.
Full profile and verified facts for Camera Preview →
Capso
Capso is a screenshot tool for macOS. Open-source screenshot and screen recording tool with annotations, OCR, and webcam overlays. It is open source.
What it does. Open-source screenshot and screen recording for macOS. The free, native alternative to CleanShot X. Built with Swift 6.0 and SwiftUI.
Capso is listed with current version 1.1.2.
Full profile and verified facts for Capso →
OpenScreen
OpenScreen is a design tool for macOS. Open-source tool for creating polished screen demos and walkthrough videos. It is released under MIT.
What it does. Record a specific window, or your whole screen. Record microphone and system audio. Webcam overlay with picture-in-picture, drag-to-position, mirroring, and shape options. Auto or manual zooms with adjustable depth, duration, easing, and pixel-precise position; auto-zoom follows your cursor as you work.
OpenScreen is listed with current version 1.5.0.
Full profile and verified facts for OpenScreen →
OverSight
OverSight is a security tool for macOS. Tool for monitoring microphone and webcam access. It is released under GPL-3.0.
What it does. Monitor webcam and mic access.
OverSight is listed with current version 2.4.0.
Full profile and verified facts for OverSight →
How to choose
- Free of charge. Camera Preview — no payment is required.
- No licence fee, source available. Capso, OpenScreen and OverSight — the source can be read and, under the terms of each licence, reused.
Open source: Capso, OpenScreen and OverSight (3 of 4).
Common mistakes
- Granting camera access to a preview tool and leaving it installed. The grant is per app and permanent until removed.
- Recording a video call to check your framing. The recording app has the same footage and a less well understood policy.
- Assuming the indicator light means the camera. The light is a circuit that a firmware bug or a compromised process can defeat, which is exactly why the monitoring tool exists.
- Using a mirror app as a monitor. A mirror only tells you about itself, and the whole point is the apps you did not install.
How this guide was put together
Each app’s facts come from its own record: the developer’s own pages and repository, the App Store listing where one exists, and the documentation, each with a source grade and an access date. Where a fact rests on the developer’s own statement rather than on something we verified independently, the sentence says so. Where our data has no value for something, the guide says “not published” instead of guessing.
A price appears here only where the record carries one from a stated source; the guide never estimates one, and it records the pricing model alongside so the two can be read together. Prices change and vary by region, so each app links to its own page for the current detail.
The facts and the recommendations are kept apart on purpose. Everything in the app entries, the comparison table and the answers above is composed from the records. The short answer, the criteria and the picks are our editorial judgment: they reflect what we would choose and why, and they are not paid for. Where we make a recommendation we name the condition it applies under, because we do not call anything “the best” without explaining the criteria.
Frequently Asked Questions
How do I choose between these webcam apps?
There is no single answer — it depends on what you need. This guide covers 4 webcam apps: Camera Preview, Capso, OpenScreen and OverSight. They differ mainly in pricing model, licence and the trade-offs each one carries. Pick by the trade-off you care about rather than by rank.
Are these webcam apps free?
Pricing across this group: free (Camera Preview) and open source (Capso, OpenScreen and OverSight). We quote a price only where the record carries one from a stated source, and we never estimate one. Prices change and vary by region and by store, so always check the developer’s own page for the current figure.
Which of these webcam apps are open source?
Capso (not published), OpenScreen (MIT) and OverSight (GPL-3.0) are open source.
Do these webcam apps support Apple Silicon?
Our data does not carry an explicit Apple Silicon statement for any app in this group, so we do not claim one. The absence of a statement is not the same as the absence of support.
How do I choose between them?
Start with how you pay: the guide groups these apps by pricing model, because the budget is the constraint most people actually have. Then check the trade-offs listed for each app: the limitations are the part that decides most people’s choice, because they describe what the app will not do for you.
