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SoftwareAlloDesk, the free SIP softphone for Windows

A softphone designed, built and published by Kopus: take and make business calls from the computer, with a headset, with contacts, call history and notes at hand. Free, with no account and no advertising; AlloDesk Pro adds the features of a phone system.

Windows 10 and 11SIPFreePro versionNo account

AlloDesk, the free SIP softphone for Windows

The context

Many companies have a SIP line but still work with a desk phone or heavy, paid applications full of options nobody uses. We wanted a simple piece of software that does everything a desk phone does, and a little more, with no account to create and no advertising. Then, for practices, front desks and small teams that need a real switchboard extension on their PC, a Pro version unlocked by a licence key, with no dedicated phone system to buy.

What we did

  1. Product and interface design: telephony, contacts, notes, history, blocked numbers and settings in a single window, with built-in help for every feature.
  2. Incoming call window brought to the front, even when the software is minimised, with the contact name and the number dialled; the gestures of a switchboard during the call: hold, direct or attended transfer, several calls, DTMF keypad.
  3. Statuses and filtering: Do not disturb, Office closed, one-click call forwarding, blocked numbers, missed calls highlighted.
  4. AlloDesk Pro: several SIP lines, call recording, voicemail, opening hours, statistics and 3-way conference, unlocked by a licence key after a free 14-day trial, with an online licence area to move a seat to another computer.
  5. Standard SIP compatibility (UDP, TCP, TLS, SRTP, G.711) and configuration guides per operator and phone system: OVHcloud, Keyyo, Zadarma, 3CX, Asterisk and FreePBX, Yeastar.
  6. The allodesk.app website: animated demonstration of the software, Pro offers page with secure payment and automatic invoice, guides, FAQ, reviews on G2 and Trustpilot. AlloDesk is a trademark registered with the INPI.
  7. Automatic sending of licence keys by email, authenticated and tracked, as soon as payment is made.

Features

Free version, no time limit

  • Call window brought to the front with the contact name and the number dialled; answer, hold or decline in one click; a second call signalled without cutting the first.
  • Hold, direct or attended transfer, several calls at once, mute and volume, keypad for voice menus, live sound-quality indicator.
  • Do not disturb, Office closed, one-click call forwarding, blocked numbers, missed calls highlighted.
  • Contact book with favourites, CSV import and export, full history with search and filters, notes on every call and a Notes page, history export.
  • Clickable numbers from a web page or an e-mail, keyboard shortcuts, start with Windows, automatic reconnection, status icon, one-click updates, microphone and headset tests.
  • Standard SIP protocol (UDP, TCP, TLS), SRTP audio encryption, G.711 codec, encrypted password, data kept on the computer.

AlloDesk Pro, the tools of a phone system

  • Several SIP lines in a single window: main line and direct lines.
  • Call recording, in one click or automatic, files kept on the PC.
  • Built-in voicemail with a synthesised or recorded greeting, messages played in AlloDesk.
  • Opening hours: automatic Office closed status or call forwarding outside business hours.
  • Call statistics (volume, answer rate, time on the line, average duration) with CSV export; 3-way conference.
  • Free 14-day trial with no card, then 1 to 10 seats: annual subscription from €29 incl. VAT or lifetime licence from €69 incl. VAT, seat transferable from the licence area.

Kopus, in-house productWhat the project brings

AlloDesk is free, with no time limit, for Windows 10 and 11: 24 free features, 6 more in the Pro version. It is also a showcase for us: a polished desktop application built for daily use, which we keep improving release after release, with its website, its guides and its licensing model.

Every purchase triggers the immediate sending of the licence key, in AlloDesk’s colours. These emails go through the same sending infrastructure we deploy for our clients: authenticated domain, traced sends, and no risk of a third party sending messages in AlloDesk’s name.

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