Im a relatively new reseller, having started in August 2025. I knew from very early on that an app would allow me to list my items faster and easier, and I read a lot about what’s out there before deciding which to use. I also did trials with several companies. I ended up landing on Sidekick Tools because of all the features available. It is the best cross listing app available. I do everything from my phone and it is connected to the five platforms I list on 24/7. It allows me to have over 500 items listed across the various platforms and takes about 1 whole minute to get the items up on all platforms. I honestly don’t know what I’d do without sidekick tools because it has made my life easier, and helped me make hundreds of sales.
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Sidekick Tools (formerly Posh Sidekick) is a crosslisting and reseller automation app built to help online sellers save time and grow their resale business.
It allows sellers to list quickly on marketplaces such as eBay, Poshmark, Mercari, Depop, Etsy, and Whatnot from one simple dashboard. Instead of listing the same item again and again on different platforms, sellers can crosslist their inventory in minutes.
Sidekick Tools also includes automation features that help with tasks like sharing, following, relisting, and managing listings on marketplaces. This makes it easier for resellers to stay active and increase their chances of making sales.
The platform also provides AI-powered tools that help sellers write product descriptions, remove backgrounds from listing photos, and create better listings faster.
Whether you are a beginner reseller or someone managing hundreds of listings, Sidekick Tools helps simplify selling with powerful crosslisting and automation tools for eBay, Poshmark, Mercari, Depop, Etsy, and Whatnot.See more
