This has been a tumultuous year for tech stocks, which as a sector have lifted the overall market’s recovery from the pandemic swoon in March. The tech stocks that have gained the most haven’t been the big companies such as Amazon, but the smaller ones in the niche businesses that are benefiting the most from the pandemic—most obviously Zoom Video, which is up a stunning 689% since the start of the year.

The list, shown in the above chart, also includes Fiverr, which connects freelancers with businesses. Fiverr is up 653%, according to FactSet. Fastly, which sells cloud-based software that speeds the loading of video and image content, is up 315%. The stock of Cloudflare, which is in a similar field, is up 234%. Most of the firms on the list offer cloud-based enterprise software, products that have gained appeal  as work has largely shifted online during the pandemic.