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OpenSlot
Turn Outlook calendars into paste-ready availability lists
Booking links make people schedule for you. OpenSlot hands them your free times instead. Pick people, a timezone and a window; it reads Microsoft 365 free/busy (read-only, nothing stored) and returns one clean, paste-ready list of every slot everyone is free. Works on the web and inside Outlook: insert into the email you're writing, or open it on a received message and hit Reply with times. Working hours, minimum slot and weekends are remembered. Free plan, 14-day Pro trial, no card.
Hi Product Hunt! I'm Jonathan, and I built OpenSlot ecause I was tired of typing "how about Tuesday at 3" and then eyeballing three people's calendars to chck.
Booking links solve this by making the other peson do the work. I wanted the opposite: hand them myfree times, in plain text, inside the email I'm alredy writing.
OpenSlot reads Microsoft 365 free/busy read-only, nothing stored), merges the people you pik, and gives you one paste-ready list in any timezon. It's an Outlook add-in and a web app. In compose i inserts at your cursor; open it on a received emailand "Reply with times" opens a reply with your availbility already in it.
It went live in Outlook's addin store this week (search "OpenSlot" under Apps). Eery account starts with 14 days of Pro, no card.
I' love to hear what's missing. Which calendars shouldit read next?
About OpenSlot on Product Hunt
“Turn Outlook calendars into paste-ready availability lists”
OpenSlot was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #133 on the daily leaderboard. Booking links make people schedule for you. OpenSlot hands them your free times instead. Pick people, a timezone and a window; it reads Microsoft 365 free/busy (read-only, nothing stored) and returns one clean, paste-ready list of every slot everyone is free. Works on the web and inside Outlook: insert into the email you're writing, or open it on a received message and hit Reply with times. Working hours, minimum slot and weekends are remembered. Free plan, 14-day Pro trial, no card.
On the analytics side, OpenSlot competes within Email, Productivity and Calendar — topics that collectively have 730k followers on Product Hunt. The dashboard above tracks how OpenSlot performed against the three products that launched closest to it on the same day.
Who hunted OpenSlot?
OpenSlot was hunted by OpenSlot Admin. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of OpenSlot including community comment highlights and product details, visit the product overview.
OpenSlot Admin