seodata.dev

keyword

best open source vpn

Monthly search volume and cost-per-click data for "best open source vpn" in US.

$ curl "https://app.seodata.dev/v1/search-volume?q=best-open-source-vpn" +--------------+------------------+ | volume | 260 | | cpc | $5.27 | | competition | 0.33 | | country | US | | updated | 2026-03-29 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
vpn open source 1,300 $4.13 15/20
open source vpn 1,000 $7.39 10/20
open source vpns 1,000 $4.19 9/20
best open-source vpn 260 $5.66 18/20
vpn free open source 170 $5.06 11/20
best open source vpns 170 $2.1 10/20
free open source vpn 170 $3 10/20
vpn open source free 170 $3 10/20
open source vpn clients 70 $0 10/20
open source free vpn 30 $4.36 10/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/search-volume?q=best-open-source-vpn" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt