Lesti Software is a one-person consulting company run by Lev Stipakov, positioned as advanced engineering services for VPN, networking, security, and systems software. It is not a SaaS product or a general-purpose development tool, but rather specialist outsourcing/consulting. The website states that the author has contributed to OpenVPN since 2017 and is the author and maintainer of ovpn-dco-win.
Its strongest areas are networking, VPN, and low-level systems development, including OpenVPN client/server integration, Windows WDF/KMDF kernel drivers, NDIS, packet I/O, cross-platform VPN clients, low-level protocol implementation, and data-path performance optimization. Supported technology stacks include C/C++, Go, Swift, Kotlin, Python, Java, and C#, with platforms covering Linux, macOS, Windows, iOS, and Android. Another service area is software consulting and contracting, such as architecture reviews, critical-path code reviews, build and CI infrastructure, and guidance on development workflows involving coding agents such as Codex and Claude.
The reference projects listed on the website are quite compelling: ovpn-dco-win is the open-source kernel data-channel driver used in modern OpenVPN Windows builds, with source code available on GitHub; helphelp2 is a 2015 refugee aid map application, also with an open-source repository; StipaCaller is an example of a personal self-hosted 1:1 calling and chat application, featuring end-to-end encryption, WebRTC, APNs/FCM, PushKit/CallKit, a Go backend, nginx, and systemd. However, these are project experiences rather than standardized self-hosted products available for purchase.
The website does not disclose rates, packages, payment methods, contract models, or SLAs. It only states that he is βmostly busy with OpenVPN; open to the right additional engagement.β As a result, prospective clients need to contact him directly to discuss requirements. For clearly defined, complex, low-level networking or systems software problems, this expert-consultant model may be more effective than a general outsourcing team. However, for teams that need large-scale staffing, long-term parallel delivery, or fixed service response commitments, a one-person company has natural capacity limitations.
The main strengths are a concrete track record and specific project examples, especially rare experience in OpenVPN, the Windows kernel networking path, and cross-platform native clients. It can also provide end-to-end control across architecture, protocols, kernel-level work, mobile clients, and backend systems. The drawbacks are the lack of transparent pricing, public delivery processes, and self-service documentation, as well as the absence of a productized API/SDK. It is best suited for VPN vendors, security companies, enterprise networking product teams, and engineering teams that need deep OpenVPN integration or Windows kernel driver expertise.
Based only on the crawled text, it is not possible to determine the access stability of stipakov.fi from mainland China, nor its payment support or contract convenience; these should be marked as unknown. If Chinese teams need alternatives, they could consider OpenVPN-related professional services, WireGuard/VPN consultants, domestic cybersecurity systems software outsourcing teams, or local vendors with Windows driver development experience.
β This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on stipakov.fi official site.
stipakov.fi is an Finland Dev Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach stipakov.fi directly.