The best internet radio software in 2026 — free and paid, compared

"Radio software" is a shelf holding several different tools, and most comparison articles blur them together — usually in whatever way flatters the product the article is selling. Let's do it properly instead. A radio station has exactly two software jobs: getting your live voice onto the stream (an encoder) and keeping music playing when you're not there (automation). Every tool below does one or both, and the right picks depend entirely on which job you're hiring for. Prices checked August 2026.

1. The two jobs radio software does

• Live encoding — capture your microphone (and music, if you're DJing), compress it, and push it to your streaming server in real time. Needed only while you're actually live.
• Automation / AutoDJ — play scheduled music 24/7, crossfade between tracks, follow rotation rules, and hand over smoothly when a live show starts and ends. This is the software that *is* your station at 4 a.m.

The historical answer was one desktop program doing both, running forever on a PC in your spare room. The modern answer splits them: automation lives in the cloud where uptime is someone else's job, and the encoder — if you need one at all — runs only during your shows. Keep that frame; every recommendation below follows from it.

2. Free live tools: BUTT, Mixxx and your phone

BUTT (broadcast using this tool) is the community's default encoder for a reason: it's free, open source, runs on Windows, macOS and Linux, and does exactly one job — take your audio input, stream it to any Icecast- or Shoutcast-compatible server. The interface hasn't won a design award since forever, and it doesn't matter; you configure it once and it just runs.

Mixxx is the pick when your live show *is* a DJ set: proper decks, sync, hot cues, effects, a real mixer — free and open source, with live broadcasting to your station built in. It's a genuine Serato/Traktor alternative that happens to speak radio.

Audacity rounds out the free shelf for production rather than broadcast: record and edit promos, jingles, interviews and pre-recorded shows, then upload the results to your library.

3. Desktop automation: RadioDJ, RadioBoss, SAM

These are the full radio-station-in-a-program suites — library, scheduler, rotation logic, cart walls, and an encoder, all running on a Windows PC:

• RadioDJ — free (donation-supported), Windows-only, and surprisingly deep: rotations, events, a proper scheduler. The classic budget pick, with a classic-forum learning curve.
• RadioBoss (desktop) — a paid one-time licence (about $199–$299 depending on edition, as of August 2026), polished and actively maintained, popular with venue and small commercial stations.
• SAM Broadcaster Pro — the old heavyweight, around $299 one-time. Powerful library and gap-killer tools; the design shows its age, but it has run thousands of stations for two decades.

All three are capable. But notice what you're really signing up for: the PC becomes the station. It can never sleep, never take a Windows update at the wrong moment, never lose power or internet — because every one of those events is dead air. You'll also still need a streaming server for the encoder to feed, which is its own line item. That operational reality — not any feature gap — is why the desktop-automation era is ending.

4. Cloud automation: the modern default

Cloud AutoDJ moves the automation job into the platform: your library, playlists, schedule and rotation rules live in a web dashboard, and the playout runs on redundant servers with someone paid to watch them. On Nobex, that means Cloud AutoDJ crossfading your rotation 24/7, rule-based rotations instead of hand-built lists, a scheduler for shows and dayparts, and automatic enforcement of the US playout rules that come with music licensing — the performance-complement limits a desktop rig leaves you to count by hand.

The trade-offs are real and worth stating: you need a platform subscription, and deep tinkerers give up some knob-level control that a desktop suite exposes. What you get back is the entire uptime problem, the streaming server, the CDN delivery, and your evenings.

5. The whole shelf, one table

One honest note on that last row: it isn't an either/or with the free tools above. The setup we see work best pairs cloud automation for the 24/7 backbone with whichever free encoder — phone, browser, BUTT, Mixxx — fits your live style. The desktop agent guide shows the wiring.

6. How to choose in 60 seconds

1. 1Mostly live DJ sets? Mixxx (free) into a cloud station. Your decks, their uptime.
2. 2Talk shows and interviews? The phone app or browser is genuinely enough. Add Audacity for editing pre-records.
3. 324/7 music station? Cloud AutoDJ, full stop. A desktop rig only wins if the PC's uptime is already someone's job — a venue, a store, an office.
4. 4In-store or venue audio on a machine you control anyway? RadioBoss or SAM are fine choices; the 3 a.m. test passes because the building is closed.
5. 5Zero budget, love tinkering? RadioDJ + BUTT + a free hosting tier — and read what free really includes first.

7. Radio software, asked and answered