Private Discuss vs Stackfield

HD video meetings up to 1,000 participants

Vendor features and contact pages state secure HD audio/video conferences for up to 1,000 participants with screen sharing, virtual backgrounds, collaborative whiteboard, breakout rooms, live polls/voting, and in-meeting electronic signature—aimed at executive and sensitive operational meetings rather than consumer calls.

Large-scale webinars with role and recording control

Webinar tooling includes organiser/presenter/participant roles, granular permissions (present, share, record, content access), interactive stage, moderated hand-raise, secure chat/reactions, and HD recording with encrypted storage and controlled access. Contact materials claim capacity up to 1 million participants for large virtual events.

E2EE messaging, files, and co-editing in one suite

Instant messaging covers 1:1 and group/channel chat with presence and mentions; secure file and media sharing (up to 20 GB per message via PiTransfer per marketing); cloud co-editing and a document library for sensitive document workflows. Security pages claim non-disableable E2EE, AES-256 for real-time calls, and RSA-2048 for file sharing.

Sovereign deployment: SaaS, on-prem, or air-gapped

Hosting options include fully managed cloud SaaS, on-premise/private servers behind the customer firewall, and use cases marketed for air-gapped or constrained networks. Privacy policy states encrypted message storage on servers hosted in France; GTS state EU hosting without transfer outside the EU for personal data in scope.

Admin suite, kill switch, and policy controls

Administration covers local/regional admin roles, user and group management, time-based access, contact and file-sharing authorisations, activity monitoring, minimum client version enforcement, MFA, geographic access limits, custom retention, and remote revoke/wipe language for compromised devices—built for security teams governing a closed network.

In-house AI tools for identity and translation

Marketed AI features include deepfake/identity verification using camera, microphone, and device signals; real-time meeting translation; Private Translate for sensitive text/documents without content leaving customer infrastructure; and an AI companion for transcription, decisions, and post-meeting summaries—positioned for closed environments rather than public LLM APIs.

Optional client-side E2E rooms (AES-256 + RSA-2048)

Rooms and direct messages can add browser-side end-to-end encryption so Stackfield cannot read covered content at rest. Admins can force E2E, ban it, or let creators choose. Trade-offs include room-password recovery after login resets, limited lock-screen/email previews, and client-side search cost—plan org policy before migrating sensitive rooms.

Tasks, Gantt, portfolios, and workflows in the same rooms as chat

List/Kanban/Gantt views, milestones, dependencies, automatic scheduling, critical path, custom fields, time tracking, reports, and project portfolios sit next to room chat and discussions. Suited to PMOs that refuse a separate tool silo; less deep than specialist ALM suites for software engineering pipelines.

Video conferences, screen share, and guest/external roles

Built-in audio/video/screen-sharing (plan-dependent) plus guest and external roles that only see assigned rooms. Useful for law firms, agencies, and public-sector projects with outside counsel or contractors without granting full org access.

Germany cloud (IONOS) plus commercial on-premise

Cloud tenants store data in German data centres; Stackfield names IONOS SE as infrastructure provider and claims no AWS/GCP/Azure product subprocessors. On-premise is a paid subscription (vendor-installed/updated, high minimum seat count) for air-gapped or policy-bound estates—test first in cloud; local PoC installs are not offered.

Enterprise access controls and in-product DPA

Higher tiers add enforced 2FA (including YubiKey options), IP allowlists, password policies, SSO, API provisioning, org-wide exports, and compliance-confirmation workflows. Organisation admins can conclude the GDPR DPA inside settings and download the signed PDF once per organisation.