Streamline

Streamline is the premium icon + illustration library with 100,000+ assets across 100+ icon families + illustration sets, founded by Vincent Le Moign in 2014. Distinguished from competitors by largest premium icon library + multiple visual styles (Cyber Punk, Plump, Sharp, etc.) + animated icons + Lottie support + multi-product family. The pitch is direct: free icon libraries (Heroicons, Tabler, Lucide) cover most basic needs at $0, but Streamline provides dramatically more variety + premium artistic styles + integrated illustration sets + animation capabilities for designers + agencies + teams who need icons + illustrations beyond what free libraries offer. For users willing to pay premium for variety + style options, Streamline is category-leading. What makes Streamline distinctive is the library size + style variety + multi-product approach. Most icon libraries focus on one style + family. Streamline offers 100+ icon families across visual styles ranging from minimal Outline to playful Plump to Cyberpunk + Hand Drawn — enabling designers to find specific style matches for any brand or aesthetic. The illustrations + 3D objects + animations + emojis + design tools alongside icons make Streamline more comprehensive design resource platform. The trade-off: pricing is premium ($99+/year) compared to free MIT alternatives, making Streamline harder to justify unless variety is critical. The core feature set: • **100,000+ premium icons** — largest premium icon library available • **100+ icon families** — multiple visual styles within library • **Style variety** — Outline, Solid, Plump, Cyberpunk, Sharp, Hand Drawn, etc. • **Illustrations + 3D objects** — alongside icons for comprehensive design needs • **Animated icons** — Lottie + GIF formats for product animations • **Emojis** — designed emoji sets for branded use • **Streamline Library** — desktop app for organization across projects • **Web access** — browser-based with desktop app sync • **Multiple export formats** — SVG, PNG, ICO, PDF, JSON (Lottie) • **Design tool plugins** — Figma + Sketch + Adobe XD + others • **API access** — programmatic icon retrieval • **Color customization** — modify colors before export • **Search + filter** — find across massive library efficiently • **Commercial license** — all assets commercially usable • **Premium illustrations + objects** — included with icon subscription • **3D illustration sets** — premium 3D illustrations alongside flat designs • **Animations + after-effects files** — premium animated content • **Subscription model** — annual access with continuous additions For designers + agencies + brands + premium design teams the use cases: • **Premium design system development** — variety of styles for diverse design systems • **Brand-distinctive icons** — premium styles beyond recognizable free library aesthetics • **Agency client work** — comprehensive variety for diverse client projects • **Multi-style projects** — different products + brands needing different icon aesthetics • **Premium marketing materials** — high-stakes visuals requiring premium polish • **Animated product UI** — Lottie animations for product micro-interactions • **3D + flat illustration combinations** — diverse illustration styles for visual differentiation • **Branded emoji + sticker sets** — custom emoji aesthetic for branded products • **Pitch deck + investor presentations** — premium polish for high-stakes business communications • **Educational content** — diverse styles for engaging learning materials The pricing is subscription-based. Personal at $99/year covers individual use + access to most icon families. Pro at $299/year unlocks all 100K+ icons + 100+ families + advanced features. Business at $499/year covers teams + commercial use + advanced features + custom requests. Compared to Nucleo ($99 one-time or $49/year), Iconscout ($10/month for icons), free MIT alternatives (Heroicons, Tabler, Lucide), Streamline is premium-priced reflecting library scale + style variety. Where Streamline wins clearly: largest premium icon library (100K+) with most style variety unmatched in the category; multi-product approach (icons + illustrations + 3D + animations + emojis) covers diverse design needs; subscription model continuously adds new content + features; premium artistic styles (Cyberpunk, Plump, etc.) provide differentiation from generic free library aesthetics; for premium design teams + agencies + brands needing variety, Streamline is hard to beat. Where it loses: pricing ($99-$499/year) is meaningful vs free MIT alternatives covering most needs; subscription model vs Nucleo's one-time purchase option; library size can be overwhelming + finding specific icons takes effort; for cohesive design systems, free single-team libraries (Heroicons, Tabler) provide better consistency despite smaller size; mostly justified for users who specifically need style variety + multi-product needs. My take: for premium design teams + agencies + brands requiring icon + illustration variety beyond what free libraries offer — Streamline is category-leading and the comprehensive multi-product platform justifies subscription. For most modern web projects using free MIT-licensed alternatives (Heroicons, Tabler, Lucide), free libraries cover 95% of needs without Streamline's premium cost. For specific use cases (brand-distinctive iconography, multi-style design systems, animated UI, 3D illustrations, comprehensive premium design library), Streamline delivers what free alternatives can't. The trajectory of free icon libraries covering most needs means premium libraries like Streamline increasingly serve specific premium niches rather than mainstream design teams. Worth evaluating for agencies + brands willing to invest in premium variety.